Encyclopedia Barsoomia Wiki
The information in this article comes from Warlord of Mars: Dejah Thoris and is not written by Edgar Rice Burroughs.

The Tharsis Mountains are a mountain range on Barsoom, and where the River Iss runs for a distance beneath the mountains.

Thuvan Dihn, the Jeddak of Ptarth, maintains a hunting lodge in these mountains. This was an isolated location where he held a convocation of Jeddaks who would eventually ally against Yorn.

Tharsis is to 64 degrees north to 1.5 north in some points, and about 48 degrees s at its southern most point.