The star of Parque Nacional Sajama, this extinct volcano (6542m) is a popular mountain to climb, but the altitude and icy conditions make the peak more challenging than it initially appears. Some La Paz agencies offer organized climbs or you can contract a local guide in Sajama – expect to pay around B$3500 for a three-day climb with all equipment included.
Hostal Sajama offers guided climbs and rents equipment. Only consider going without a guide if you have experience with high-altitude climbing, but prepare for extremely cold and icy conditions and carry lots of water close to your body (otherwise it will freeze). Do not try to climb the volcano between November and February; wet weather and electrical storms make this a dangerous time to ascend.