The route starts from the “chain” point authorized by the Galapagos National Park; they are 8 km from the point to the edge of the crater. It then descends approximately 2km or 3km until you reach the mines of sulphur, which is located within the crater of the volcano, in the whole course will be able to observe the flora of that area, such as; guava, ferns. As animals, we can see lava lizards, cucuves. In addition to the climatic variation.

Mines of sulphur are rocks that are created thanks to the cooling of the sulphurous gases through long pipes volcanic. What's interesting about this site, to be totally clear, it is that allows us to see the crater of the sierra negra volcano, and clearly observe the crater of the volcano mines of sulphur.