The Dholavira signboard
Proposed
The Dholavira signboard
10 signs in reading order; spoked wheel appears 4 times, at positions 1, 4, 8, 9. Tap a sign above to read its entry.
- The Dholavira signboard is a ten-sign inscription of unusually large letters, thought to have been inlaid on a wooden board above the north gate of the citadel. [11]
- One of its ten symbols is repeated four times. [12]
- Its excavator, R. S. Bisht, is quoted on the varnam blog as saying the inscription could stand for the name of the city, the king or the ruling family. [13]
- Rekha Rao, in an unreviewed article for the web magazine Indica Today, reads all ten signs as Vedic ritual objects and altars, and says the symbols describe the rituals in vogue in the Vedic and post-Vedic periods. [14]
- S. Kalyanaraman, on his blog, reads the board as a catalogue of metalwork by Meluhha metalworkers, each sign a rebus for an ore, a metal or a craft. [15]
Where texts begin and end
6 signs, a group rather than an inscription. Tap a sign above to read its entry.
- In a statistical study of Mahadevan's concordance, Yadav and colleagues found the three signs that most often begin a text to be 267, 391 and 293, and the three that most often end one to be 342, 176 and 211; they are shown here in that order. [3]
- A text beginner is the sign at the right end of an inscription as pictured, and a text ender the sign at the left end, since the texts read right to left. [3]
- The ends of a text are far more constrained than its beginnings: 23 signs account for 80 percent of all text enders, while 82 signs are needed for 80 percent of all text beginners. [3]
- The three beginners are more selective about which signs can follow them than the three enders are about which signs can precede them. [3]
- The study worked on a filtered copy of the concordance, with every text containing lost, damaged, illegible or doubtfully read parts removed. [3]
DH-wheel spoked wheel
On The Dholavira signboard at positions 1, 4, 8, 9 of 10 — 4 times.
- Rekha Rao, in an unreviewed article, identifies the six-spoked circle as the Garhapatya, one of the three sacred altars of Vedic ritual. [14]
- Rekha Rao, in the same unreviewed article, takes the two wheels side by side at positions eight and nine for Punaradheya, the reinstallation of the sacred fires. [14]
- S. Kalyanaraman, on his blog, reads the spoked wheel by rebus from words for nave and spoke as molten cast metal, copper or brass. [15]
DH-tee T-shaped sign, a bar on a stem
On The Dholavira signboard at position 2 of 10.
- Rekha Rao, in an unreviewed article, takes the second sign for the pranita patra, a kind of cup with a handle used to fetch holy water in ritual. [14]
DH-crossed-stem crossed sign with a stem
On The Dholavira signboard at position 3 of 10.
- Rekha Rao, in an unreviewed article, takes the third sign for the dasapavitra, the filter used to strain soma in the soma sacrifice. [14]
DH-lozenge lozenge
On The Dholavira signboard at position 5 of 10.
DH-cross two crossed strokes
On The Dholavira signboard at position 6 of 10.
- If this is Mahadevan's X-like sign 137, as its form suggests, Mahadevan reads it as to divide or share, as grain, by comparison with the near-identical Egyptian ideogram meaning to divide. [16]
- Rekha Rao, in an unreviewed article, takes the two intersecting lines for the catuspatha, the crossroads where four roads meet and an oblation is offered to Rudra. [14]
DH-stroke single vertical stroke
On The Dholavira signboard at position 7 of 10.
- Rekha Rao, in an unreviewed article, suggests the single stroke is idhma, the supply of wood logs for the sacred hearths. [14]
DH-hook hooked sign
On The Dholavira signboard at position 10 of 10.
- Rekha Rao, in an unreviewed article, takes the last sign for the parisasa, the tongs used in the Pravargya fire ritual. [14]
M-342 the jar sign
Listed under Where texts begin and end.
- Mahadevan reads it as a Dravidian pronominal masculine singular suffix, sometimes with the ideographic sense of a sacrificial vessel with food offerings. [2]
- Mahadevan also suggested that within the script it may have served as a grammatical suffix, possibly a nominal suffix used only by the elite. [17]
- Parpola, per Mahadevan, takes the sign to represent the front view of a bull or a cow with curved horns. [17]
- Wells considered it a terminal marker that might have been a verbal ending with the sound value -ay. [2]
- Bonta reads it as a predicate or root meaning be or belong to, possibly a general predicate marker. [2]
STROKES the stroke numerals
- Parpola proposes that groups of small inverted semi-circles found beside the strokes are tens. [5]
- Mukhopadhyay suggests that, since only a limited number of strokes are used across the corpus, the stroke signs may have stood for denominations of a standard metric. [2]
- Parpola argues that a numeral precedes the word it counts, as in Proto-Dravidian, though not in every case. [18]
M-267 lozenge with a chevron inside
Listed under Where texts begin and end.
- Mahadevan identifies it as an ideogram for the fortified house, the citadel or inner city, an address sign, matched to the Egyptian hieroglyph for a fortified house. [19]
- Mahadevan notes that this citadel sign followed by a two-stroke suffix is by far the most frequent opening of the Indus texts, especially on seals. [19]
M-391 circle with eight spokes
Listed under Where texts begin and end.
- No reviewed reading of the spoked circle is recorded here; S. Kalyanaraman, on his blog, reads the spoked wheel by rebus from words for nave and spoke as molten cast metal, copper or brass. [15]
M-293 single crescent
Listed under Where texts begin and end.
- Mahadevan reads the crescent moon by rebus as the outer city and the others, an address sign paired against the citadel: Tamil pirai, crescent, sounding like puram, outside. [19]
M-176 stem with three bars to the right
Listed under Where texts begin and end.
M-211 stem with a triangular head
Listed under Where texts begin and end.
- Mahadevan reads the arrow sign as a grammatical morph, the non-masculine singular nominal suffix, with the rebus value -(a)mpu, after an Old Telugu gender suffix. [21]
- Mahadevan calls it the twin of the jar sign: both close a text after signs that may be names, so both look like grammatical suffixes, and where one occurs the other never does. [20]
- Parpola, per Mahadevan, takes the jar and arrow signs for two case endings, one genitive and one dative, which Mahadevan doubts because the two never follow the same names. [20]
Counting
The number tool draws 9 or fewer as strokes, 4 or fewer on one row and the rest in two tiers; the split is this page's rendering choice. Anything larger, and zero, is refused; the reasons are the notes below.
- The stroke numerals run to nine strokes, in one or two tiers. [5]
- Only a limited number of strokes are used across the whole corpus. [2]
- The Harappans' stone weights, found at Mohenjo-daro, run in the ratios 1, 2, 4, 8, 16, 32, 64, 160, 200, 320, 640 and 1,600: binary in the small weights, then decimal. [22]
- Hemmy found no inscription or mark of value on any of the weights. [22]
- The most common weight is the 16th ratio, about 13.7 grams; above the 64th ratio the increments become decimal. [23]
What the number tool links to
- Drawn as strokes: Parpola's set of stroke numerals runs to nine strokes, arranged in one or two tiers. [5]
- Zero: The numerals consist of groups of vertical strokes. [18]
- Too large: The attested stroke numerals run to nine; Parpola proposes that groups of small inverted semi-circles beside them are tens, a proposal rather than a reading. [5]
- Not a number: Phonetic and semantic interpretations of individual signs vary widely. [2]
Indus script explorer
What is known
Every sentence on this page is followed by the number of the source it rests on. Observed means what the corpus shows; proposed means a reading someone has argued for, named and cited, never adopted here. Each source is labelled by what it is: primary, peer-reviewed, unreviewed (a blog, a web magazine or a self-published paper) or press. Nothing on this page translates anything. Glyphs are hand-drawn approximations of the published drawings; the signboard's signs carry form-based codes because no peer-reviewed or primary source that could be opened lists their catalogue numbers.
- The Indus Valley script is undeciphered. [1]
- Phonetic and semantic interpretations of individual signs vary widely. [2]
- The points of scholarly consensus are few: that most inscriptions read right to left, that certain stroke-like signs are numerals, and that certain terminal signs share a function. [2]
- Mahadevan's 1977 concordance, the standard reference, records 417 distinct signs in 2,906 texts. [3]
- Nearly 4,000 inscribed objects are known: seals, sealings, tablets, ivory rods and pottery. [2]
- Estimates of the sign inventory run from 417 signs to 694, depending on how variants are counted, and nearly 27 percent of Mahadevan's signs occur only once. [1]
- The texts are short: the average inscription is five signs. [4]
- The longest inscription on one side of an object has 17 signs; two identical three-sided tablets carry 26 signs each. [4]
- The evidence for right-to-left writing is that short inscriptions start at the right edge and leave the left blank, and that the left-most signs of long inscriptions spill onto a second line. [5]
- Seal stamps, engraved in mirror image, read left to right, and a few texts run left to right or alternate direction line by line. [4]
- Mahadevan and Parpola, the two scholars behind the standard sign lists, agree that the script is logo-syllabic and that the language shows Dravidian-like features. [5]
- Farmer, Sproat and Witzel argue that the symbols were not writing at all, and were not evolving toward writing after at least 600 years of use. [6]
- Rao and colleagues found that the conditional entropy of the inscriptions matches linguistic systems rather than non-linguistic ones, which they say increases the probability that the script represents language. [7]
- A 2026 preprint re-tested the question against synthetic baselines and found that the corpus does not match either a linguistic or a non-linguistic baseline cleanly. [8]
- The script is not in Unicode; Michael Everson proposed 386 characters for it in 1999. [9]
- The Unicode roadmap for the Supplementary Multilingual Plane still lists the Indus script against that 1999 proposal. [10]
Sources
- [1]Shruti Daggumati, Peter Z. Revesz (2021). A method of identifying allographs in undeciphered scripts and its application to the Indus Valley Script (Humanities and Social Sciences Communications) · peer-reviewed
- [2]Bahata Ansumali Mukhopadhyay (2019). Interrogating Indus inscriptions to unravel their mechanisms of meaning conveyance (Palgrave Communications 5:73) · peer-reviewed
- [3]Nisha Yadav, Hrishikesh Joglekar, Rajesh P. N. Rao, Mayank Vahia, Ronojoy Adhikari, Iravatham Mahadevan (2010). Statistical Analysis of the Indus Script Using n-Grams (PLoS ONE) · peer-reviewed
- [4]Asko Parpola (eds. Jagat Pati Joshi and Asko Parpola) (1987). Corpus of Indus Seals and Inscriptions 1: Collections in India — Introduction · primary
- [5]Iravatham Mahadevan (1997). An Encyclopaedia of the Indus Script (review of Parpola, Deciphering the Indus Script) · peer-reviewed
- [6]Steve Farmer, Richard Sproat, Michael Witzel (2004). The Collapse of the Indus-Script Thesis: The Myth of a Literate Harappan Civilization (Electronic Journal of Vedic Studies 11-2) · peer-reviewed
- [7]Rajesh P. N. Rao, Nisha Yadav, Mayank Vahia, Hrishikesh Joglekar, Ronojoy Adhikari, Iravatham Mahadevan (2009). Entropic Evidence for Linguistic Structure in the Indus Script (Science 324) · peer-reviewed
- [8]Ashish Nair (2026). How Non-Linguistic Is the Indus Sign System? A Synthetic-Baseline Scorecard (arXiv preprint 2604.17828) · primary
- [9]Michael Everson (1999). Proposal for encoding the Indus script in Plane 1 of the UCS (ISO/IEC JTC1/SC2/WG2 N1959) · primary
- [10]Unicode Consortium. Roadmap to the SMP (Unicode Consortium) · primary
- [11]Archaeological Survey of India (2011). Excavations — Dholavira (Archaeological Survey of India) · primary
- [12]Archaeological Survey of India. Dholavira Symbols 1 (Archaeological Survey of India caption, reproduced at harappa.com) · primary
- [13]J. K. (2010). The sign board at Dholavira (varnam blog, quoting the excavator R. S. Bisht) · unreviewed
- [14]Rekha Rao (2023). Interpreting the Dholavira Sign Board of Indus Civilization (Indica Today, a web magazine) · unreviewed
- [15]S. Kalyanaraman (2015). Dholavira 1. Signboard and 2. Stone inscription: deciphered as metalwork catalogs (Bharatkalyan97 blog post, read through its feed) · unreviewed
- [16]Iravatham Mahadevan (2012). Agricultural Signs in the Indus Script (Review of Agrarian Studies 2:2) · peer-reviewed
- [17]Iravatham Mahadevan. The Terminal Indus Sign (interview with Iravatham Mahadevan, harappa.com) · primary
- [18]Asko Parpola (2010). A Dravidian solution to the Indus script problem (Classical Tamil Research Endowment Lecture, Coimbatore) · primary
- [19]Iravatham Mahadevan (2010). Akam and Puram: 'Address' Signs of the Indus Script · primary
- [20]Iravatham Mahadevan. The Indus Arrow and "Harrow" Sign (interview with Iravatham Mahadevan, harappa.com) · primary
- [21]Iravatham Mahadevan. The Arrow Sign in the Indus Script, part 5 (harappa.com) · primary
- [22]A. S. Hemmy (1931). System of Weights at Mohenjo-daro, in Mohenjo-daro and the Indus Civilization, vol. II (ed. John Marshall) · primary
- [23]Jonathan Mark Kenoyer (2010). Measuring the Harappan World, in The Archaeology of Measurement (eds. Morley and Renfrew, Cambridge University Press) · peer-reviewed
What it is
An explorer for the Indus Valley script, built around the difference between what can be observed about it and what has been proposed. The page opens on a stage in two halves. The top half is observed: a pager counts the observed sets the page holds and steps between them; today those are the Dholavira signboard, its signs redrawn by hand from the published drawing, and the signs a statistical study found most often begin and end a text, redrawn from Mahadevan's sign list. A toggle on the same bar switches the stage to a number tool that draws a whole number as rows of vertical strokes. The bottom half is proposed: by default it describes the observed set on show, and for a selected sign it shows that sign's entry, what scholars have argued the sign is, each argument named and cited, with a numbered source after every sentence on the page.
Tap a sign on the stage and the bottom half switches to its entry, with a Reset button to return to the set; the entry leads with what has been proposed for the sign, each reading attributed to the paper that made it and never adopted as the page's own, or says plainly that no reading is recorded. Type a number and it is drawn as strokes, up to four on one row and the rest split into two tiers, a layout the page labels as its own choice. Type a word, a letter, zero, or a number beyond the stroke set, and the tool refuses and offers one link to the note that explains why, with its source. It is deliberately not a translator: the page never renders letters or words as signs, and it says so.
Every factual sentence is stored as data with the verbatim passage of its source beside it, and a script re-fetches each source and records whether the passage is still there. The glyphs are hand-drawn approximations of the published drawings, not a font and not copied images. Sources are listed at the foot of the page, every citation links to its entry, and the address of any sign's entry can be shared as a link.
How to use it
- Tap a sign on the stage; the bottom half shows its entry. Reset returns to the set.
- Switch the stage to Numbers and type a whole number to draw it as strokes.
- Type anything else and follow the link to the note on why it is refused.
- Every sentence ends in a source number; click it to jump to the source.
- Share a sign by copying the address after clicking it.
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