Editing Triton (moon) (section)

=== Cantaloupe terrain ===
[[File:PIA01537 Triton Faults.jpg|thumb|Cantaloupe terrain viewed from 130,000&nbsp;km by ''[[Voyager 2]]'', with crosscutting [[Europa (moon)|Europa]]-like double ridges. Slidr Sulci (vertical) and Tano Sulci form the prominent "X".]]
Triton's western hemisphere consists of a strange series of fissures and depressions known as "cantaloupe terrain" because it resembles the skin of a [[cantaloupe]] melon. Although it has few craters, it is thought that this is the oldest terrain on Triton.<ref name="cantaloupe"/> It probably covers much of Triton's western half.<ref name="EncycSolSys-Triton"/>

Cantaloupe terrain, which is mostly dirty water ice, is only known to exist on Triton. It contains depressions {{nowrap|30–40&nbsp;km}} in diameter.<ref name="cantaloupe"/> The depressions (''cavi'') are probably not impact craters because they are all of the similar size and have smooth curves. The leading hypothesis for their formation is [[diapir]]ism, the rising of "lumps" of less dense material through a stratum of denser material.<ref name="EncycSolSys-Triton"/><ref name="Diapirism"/> Alternative hypotheses include formation by collapses, or by flooding caused by [[cryovolcanism]].<ref name="cantaloupe"/>