This 200m-tall extinct volcano, and its surrounding lava field, dominates the area to the east of the lake. You walk around it on your way to the lake from Tariat, but you can also climb up to the rim of the crater for some fabulous views. There are steps up to the crater from the west side. Those with more energy, and a good sense of balance, could try climbing the slippery scree slope on the volcano's eastern side. You can then walk around the rim of the crater (anticlockwise is easiest) and climb down the steps. Sliding back down the scree sounds fun, but is pretty dangerous.
