The Archives: Exterrock

One file in the Archives reveals information about the Exterrock. You read carefully to learn about this creature and obtain more knowledge about the mysterious species of Ark.

Evolution Points (2)

200 Feeds

500 Feeds




Previously available at the Asteroid.


1478 kg


1.9 m

Obtained From


Gender Profile

85% male, 10% female, 5% non-binary


Outer Space

Population Rank

#712 of 1102

About Exterrock Eggs

The incredibly sturdy metal shell of Exterrock eggs is composed of a copious amount of chemical elements found within and beyond Ark. They are surprisingly somewhat warm to the touch despite it being common for the eggs to reach a searing innermost temperature of 1,000°C (1,832 °F).

About the Exterrock Creature

Reportedly one of the earliest example of genetic engineering by the Storticai as claimed by their lead researchers, Exterrocks are biomechanical beasts of burden used primarily to excavate mining tunnels and smelt ores. Exterrock actually contain genetic tissue unlike the purely mechanical Sentregg, Ophiledia, and Apex, which lends an explanation to their more naturalistic behavior. They have a demeanor strongly comparable to that of Ark's own cattle and even boast a full-fledged social structure.

Exterrock have an unending appetite and are constantly feeding on rocks, soil, and other generally inedible substances. While excavating tunnels, they can consume up to 1,000 kilograms of said material in a single day. Construction companies on Ark are incorporating Exterrock into their workforce and productivity has since tripled.

Entry Written By: Meteoroid