The largest volcano in the solar system — 21,229 m above the Martian datum.HE-SP-26-013-OLM
↑ 21,229 M

Wider than Arizona. Largest volcano in the solar system.

The largest volcano in the solar system. 21,229 m above the Martian datum, 600 kilometres wide — built over billions of years of eruption.

Olympus Mons

Tee + matching print · Same source data on both.

$82
$93Save $11
Edition
TeeArchival Print
Colorway Black
Tee size
Print size

Same terrain · same Archive ID · save $11

Free shipping in the US
Ships in 5–9 business days

Size guide & fit notes

Unisex fit · 100% combed ring-spun cotton. True to size for most people. If between sizes, size up for relaxed fit.

SizeChestLength
XS33–35″ · 84–89 cm27″ · 69 cm
S35–37″ · 89–94 cm28″ · 71 cm
M38–41″ · 97–104 cm29″ · 74 cm
L42–45″ · 107–114 cm30″ · 76 cm
XL46–49″ · 117–124 cm31″ · 79 cm
2XL50–53″ · 127–135 cm32″ · 81 cm

How to measure

Chest

Measure around the fullest part of your chest, under the arms, keeping the tape parallel to the floor.

Length

From the highest point of the shoulder seam down to the bottom hem.

Model is 5′11″ / 180 cm, wearing size M · Shirt runs true to size. Pre-shrunk cotton.

Shipping & returns

Made to order. Each piece is printed for you after you order — nothing is pre-stocked.

RegionShippingTransit
USAFree5–9 business days
International Join waitlist Not shipping yet

Returns & exchanges.

Every piece is made to order — no pre-stock, no waste. That changes how returns work.

  • Damaged, defective, or the wrong item shipped to you: free reprint or refund. Email within 30 days with your order number and a photo.
  • Doesn’t fit when you try it on: we can’t offer free size exchanges (reprinting + reshipping means a full second production run). Please check the Bella+Canvas 3001 size chart on the product page. If the fit is really off, email us — we help case by case with a discounted reorder or store credit.
  • Prints and change of mind: archival prints cannot be exchanged or returned. We don’t accept returns for buyer’s remorse on any item.
  • Complete Editions ship as two separate packages (tee + print) and may arrive on different days. Tracking provided for both.
  • Refunds and store credit processed within 14 days of confirmation.

Questions? hello@horizoneditionsstudio.com

Buying as a gift

Sending this to someone? Here’s how a gift order works.

  • Turn on “This order is a gift” in your cart. One switch covers the whole order.
  • It ships straight to them. Enter the recipient’s address as the shipping address at checkout, and your own as the billing address — you don’t need their details now.
  • They never see the price. No amounts on the invoice or anywhere in the parcel.
  • Add a gift message. They receive it by email the moment their gift ships.

Not sure which format suits them? See more gift ideas →

— The Story

A shield that rose,and never stopped.

I am 21,229 metres tall — the largest volcano in the solar system. I rise from the Tharsis bulge on the western edge of Mars, 600 kilometres wide at my base. My summit caldera is a nested collapse, kilometres deep. My slopes are gentle — a shield volcano, not a stratovolcano — because lava on Mars flows freely under one-third the gravity.

For most of human history Mars was a red point that moved against the stars. In late 1971 Mariner 9 entered Martian orbit and met a planet-wide dust storm. The probe waited. When the dust cleared in early 1972, Olympus Mons was the first feature to surface — a circular rise five times wider than its early-modern interpretation as Nix Olympica, the snow on Olympus. The youngest lava flows on my flanks may be only twenty-five million years old. I may not be extinct.

The terrain in this edition was measured between 1999 and 2001 by the Mars Orbiter Laser Altimeter aboard Mars Global Surveyor. Six hundred million laser pulses recorded the elevation of every square kilometre of my surface, accurate to within three vertical metres. None of it is invented. I am too wide to see from any point on Mars itself; the only place I exist whole is in this data.

From the summit, Mars curves away before the base comes into view. It is too wide to see.
— The shield, in numbers

A shield that rose,and never stopped.

↑ 21,229 M · 600 KM WIDE
SHIELD VOLCANO · THARSIS · MARS
Summit height21,229 mabove the Martian datum
Base diameter600 kmshield base width
Summit caldera80 × 60 kmup to ~3 km deep
Average slope~5°gentle shield gradient
First imaged1971Mariner 9
Youngest flows~25 Mamay not be extinct
— The set

Two objects,same source.

The Tee for daily wear. The Archival Print for the wall. Same contour data, drawn from the same source terrain record. One on cotton, one on paper. Together: a complete piece.

Tee

Cotton tee, printed in the United States. See The Object on the Tee page for full spec.

Print

Museum-quality archival print on 250 gsm matte stock. See The Object on the Print page for full spec.

Production

Made to order in the United States. Printed and shipped within a few business days.

Set savings

Tee + Print is $93 separately. Complete Edition is $82. Save $11. Same Archive ID on both items.

— Provenance

Every line,traceable.

◉ Terrain

Archive ID HE-SP-26-013-OLM
Trophy ↑ 21,229 M — Wider than Arizona. Largest volcano in the solar system.
Terrain Olympus Mons · 18.65 · -133.8 · Tharsis Rise
Source NASA MOLA · Mars Global Surveyor
Dataset / version NASA MGS MOLA · MEGDR
Resolution 463 m/pixel · ±3 m vertical (1/128° MOLA grid)
Contour interval Source: 500 m vertical · MOLA MEGDR grid · Rendered: 1000 m (tee)
Projection IAU Mars 2000 spheroid · areographic

◉ Method

Extraction QGIS 3.34 · contour extraction from source grid
Editing Human vector cleanup in Illustrator · no smoothing algorithms applied
License NASA public domain · MOLA Science Team (JPL/GSFC)
AI use None. No generative models, no style-transfer, no AI autocomplete — at any stage. The shield is drawn by laser altimetry, not by prediction.
Verification Cross-referenced with the USGS Astrogeology MOLA products and USGS Gazetteer
Issue 04 · Spring 2026
Provenance Verify this Archive ID →
— The gift

Made to be received.

Built to be opened slowly. A considered piece for someone who knows the place — or wants to remember it.

Gift ready

A considered terrain piece for someone who knows the place — or wants to remember it.

No size guessing

The archival print makes a strong gift when sizing is uncertain.

Ship to them

Send it directly to the recipient at checkout. Order confirmation and tracking stay with the purchaser where supported by Shopify.