One of the most prominent features in the northern ice cap. A large northern canyon as long as the Grand Canyon, but deeper and wider. Cuts from one edge of the ice cap to about halfway through, a little below the center.
| Identifier (URI) | Rank |
|---|---|
| dbkwik:resource/TL4C8oieSyITLvCai3ms2Q== | 5.88129e-14 |
| dbr:Chasma_Boreale | 5.88129e-14 |