Xen's Weekly Image

This is a picture I took of the Irazu Volcano in Cartago, Costa Rica (http://www.govisitcostarica.com/region/city.asp?cid=201) . Though currently dormant, it is Costa Rica's largest volcano. You can drive up and stand on the rim looking down into the crater, which is what this picture shows. The huge concentrations of sulphur are what gives the pool of water it's green color.