Valles Marineris
Valles Marineris is a canyon system on Mars. It is 4,000 miles (6,400 kilometres) long.[1]
References
- ↑ "Mars Exploration: Multimedia". mars.jpl.nasa.gov.
Valles Marineris is a canyon system on Mars. It is 4,000 miles (6,400 kilometres) long.[1]