It can be ascended via a long scree scramble from the Preston Park area, or from Piegan Pass via Cataract Mountain.

The summit can also be reached via a long hiking/mountaineering route dubbed the "Skyline Experience"; this route starts from the Many Glacier Hotel and involves 5.5 miles (9 km) ridge walk and includes the summits of Wynn Mountain (8,404 feet (2,562 m)) and Cracker Peak (9,833 feet (2,997 m)) before reaching the top of Siyeh.

Route Descriptions can be found on Summitpost or in A Climbers Guide to Glacier National Park.

Like other mountains in Glacier National Park, it is composed of sedimentary rock laid down during the Precambrian to Jurassic periods.

Formed in shallow seas, this sedimentary rock was initially uplifted beginning 170 million years ago when the Lewis Overthrust fault pushed an enormous slab of precambrian rocks 3 mi (4.8 km) thick, 50 miles (80 km) wide and 160 miles (260 km) long over younger rock of the cretaceous period.