Waylla, Mountain summit on the Bolivia–Chile border, Tarapacá Region, Chile

Waylla West is a mountain summit rising from the Atacama Desert with steep slopes and rocky terrain throughout. Its elevation and harsh topography demand specialized mountaineering skills and proper preparation before attempting the ascent.

Waylla West is the lower of the two Waylla peaks, about 4,870 m high and roughly 3 km southwest of Waylla East (4,923 m). Both stand on the Bolivia–Chile border in the Cordillera Occidental, between the Salar de Huasco in Chile's Tarapacá Region and Bolivia's Uyuni salt pan. On the Bolivian side the peak lies in Llica Municipality, Daniel Campos Province, Potosí Department, northwest of the village Pampa Anta.

The name Waylla comes from Aymara, where it denotes a kind of feather grass (Stipa obtusa); the hispanicized forms Guailla and Huailla are also used. The two summits, Waylla East and Waylla West, stand about 3 km apart on the Bolivian-Chilean border, between the Salar de Huasco and the Uyuni salt pan.

Climbers must acclimatize to high altitude and bring specialized mountaineering equipment and experienced guides. Plan for adequate acclimatization time and pack protective gear for extreme weather conditions found at elevation.

Waylla West is the lower of two summits that form the Waylla massif; its twin, Waylla East, reaches about 4,923 m and lies roughly 3 km away. The name Waylla comes from Aymara for Stipa obtusa, a feather grass. The peak stands between Chile's Salar de Huasco and Bolivia's Uyuni salt pan, with Wila Qullu to the north-east.