Statements (13)
| Predicate | Object |
|---|---|
| gptkbp:instance_of |
gptkb:valley
|
| gptkbp:bfsLayer |
5
|
| gptkbp:bfsParent |
gptkb:Noachian_period
|
| gptkbp:discovered_by |
gptkb:Mariner_9
|
| gptkbp:features |
ancient river channels
|
| gptkbp:geographical_feature |
gptkb:Noachian_period
|
| https://www.w3.org/2000/01/rdf-schema#label |
Nirgal Vallis
|
| gptkbp:image |
gptkb:Viking_orbiters
|
| gptkbp:length |
over 1,500 kilometers
|
| gptkbp:located_in |
gptkb:Mars
|
| gptkbp:named_after |
Nirgal, a Babylonian god
|
| gptkbp:significance |
evidence of past water flow
|
| gptkbp:surrounding_area |
Tharsis region
|