From New Scientist:
“ALL the fish and birds were gone, the trees were defoliated and their mosses dead, and the local lakes and rivers were lined with yellow scum. This was the aftermath of a mysterious catastrophe in July 2005, as reported by a lodge-owner near the remote Chiginagak volcano in Alaska.
A group of geologists has now pieced together what happened. In May 2005, they say, a torrent of sulphurous liquid and mist gushed from the volcano’s icy crater, leaving a trail of sulphur deposits and turning salmon spawning-grounds as acidic as lemon juice. “