Lake Photos
The existence of a new volcanic crater lake was interesting to scientists because such sites during the early earth are thought to be where living organisms began. The lake temperature was high (>55 deg C) and the pH was low (<1).
Acid Crater Lake
Casadevall, T., S. de la Cruz, W.I. Rose, S. Bagley, D. Finnegan and W. Zoller, 1984, Volcán El Chichón, Mexico: The crater lake and thermal activity, J. Volcanol. Geoth. Res., v. 23, p. 169-191.
Volcanic lake research--UCDavis
