Laguna Azul

In February 2005 a careless backpacker started a distastrous fire when his cooker was blown over, destroying 155 km² of the national park and 2 km² of native forest. Considering that nothofagus in this climate takes centuries to grow this was a major disaster which was repeated in 2011 when another backpacker caused a fire which destroyed 176 km²/36km² arround Lago Pehoe.
Fines for tourists are still ridiculously low but at least the Czech and Israeli governments donated money for reforestation after their citizens caused the damage.