The Boiling Lake is truly remarkable and somewhat scary. You should probably not come too close to the edge, because who wants to fall into boiling water? It actually already happened.
Besides hiking, this tour offers wellness as well. The sulfur-containing sludge on your skin is supposed to work wunders. You can wash it down in one of the beautiful natural pools or waterfalls along the way.
This hike is highly recommended for trained hikers!