Rolwaling Valley, which contains several small Sherpa villages, is the largest town in the area is a section of the Himalayas in east-central Nepal along the Tibet border.

It would take five to six days to reach Namche Bazar after pass Tasilapcha. Rolwaling valley is the main access to Pharchamo 6273m an attractive snow peak, though this route was closed for most of the 1980s due to potential dangers to porters crossing the Tashi Lapcha ; The only alternative route from the Khumbu side via Namche Bazar.It has a north-by-northwest ridge, which rises from the crevassed glacier astride the Tashi Lapcha.

The face of the ridge forms a uniform slope broken by crevasse and seraes rising from the rocky lower buttresses above the Drolambau Glaciers in the west.

STEPZERO.ONE with Biwak Stairway proposes to build an Austrian type Biwak hut for the trekking community along the pass as a refuge to the harsh and challenging mountain weather.

Located in the Gauri Shanker Conservation Region the proposed hut is to be maintained and utilized also by the local who frequently uses the pass.