This is crazy town at the end of the Careterra Austral, which was wiped out by a volcanic eruption. The government decided to abandon the town and rebuild it somewhere else, but there are still a number of hard-core dwellers that refuse to leave... The grey stuff in the pictures is all ash! My first impression was driving through Chernobyl or something like that. Very spooky.

 http://en.wikipedia.org/wiki/Chaiten