The "Tholus"

The Tholus as seen from Viking and the MGS. Graphic by Mark Carlotto.

Carlotto's views of the Tholus from the ground based on Viking data (note "groove").

Carlotto's rotation of the Tholus reveals a possible triangular platform at the peak, as well as a feature corresponding to the "groove" (above).

Cydonian Imperative | Face | Fort | Main City Pyramid and City Square | D&M Pyramid | Pictogram | Tholus | Coathanger | Cliff | Mounds