<http://www.jpl.nasa.gov/images/pia02682-tinto-vallis/#webpage>
<http://schema.org/description>
"In this section of Tinto Vallis on Mars there are no tributary stream channels joining the main channel. This tells us that whatever carved the channel originated in some other region as seen by NASA's 2001 Mars Odyssey."
<https://www.jpl.nasa.gov/images/pia02682-tinto-vallis/>