Tuesday, 26 February 2013
These lakes were created by several explosion craters within the last ten thousand years giving them a circular or crescent form. The landscape is covered with blocks of lava and scoria as well as some fine ash remaining from Ruapehu's 1995 - 1996 eruptions.
Taupo eruption about 1800 years ago. This photo shows some charcoal fragments - remains of some of the vegetation that was scorched during the most violent eruption on earth in the last 5000 years.
The lower Tama lake is being slowly filled up by a river bringing in eroded ash and other volcanic debris from the surrounding area. You can see this delta on the far side of the lake in the image. Beyond it is a similar adjacent (sediment filled) crater of about the same size. The water is very clean and drinkable, and yes - it really was that blue!