[1] Karkevagge is noted for the Giant Boulder Deposit (GBD) which fills it with huge jumbled blocks, some the size of houses.

One of Sweden's leading geoscientists, Anders Rapp, a world pioneer of quantitative geomorphology, studied the valley for 10 years.

He suggested that the parallel rows of blocks had descended in waves from the valleyside cliffs.

However a large angular cavity beside Rissajaure (top right in picture) has a volume of 42 million cubic metres.

The GBD probably descended from it as a rock avalanche and spread down the valley on a glacier, giving it a moraine-like form and visual unity as seen from the air.