Other spies who passed the polygraph include Karl Koecher, Ana Belen Montes, and Leandro Aragoncillo. The university also has campuses in Tiradentes and Montes Claros. The Tharsis Montes are slightly smaller than Olympus Mons. Maxwell Montes, the highest mountain on Venus, lies on Ishtar Terra. The three Tharsis Montes are about apart. The observations also revealed a bright region attributed to mountains, which was called Maxwell Montes. Located in the Mithrim Montes range, it is 3,337 m tall. After this defeat the Bolivian army prepared for a last stand at Villa Montes. The best preserved portion of the Lacandon is within the Montes Azules Biosphere Reserve.