Having experienced myself the tremendous beauty and danger of the lava flows and sulfur gasses of kilauea volcano in Hawaii, I found this photo essay of the Nyiragongo crater lava lake to be fascinating. What an incredible experience, to be one of only a very few people to ever reach the rim of the very active, on-going creation of the earth itself.
Nyiragongo Crater: Journey to the Center of the World – The Big Picture – Boston.com.