Since humans arrived to Iceland, 96% of forests have been cut down and the vegetated part has reduced from 60% to less than 25%, due to severe erosion caused by sheep overgrazing. The Soil conservation service of Iceland has some projects aimed at revegetation.
In autumn 2015, I hiked in eastern Iceland (Lónsoræfi area) and was somewhat dismayed by the impact of sheep even in remote and steep valleys in a nature reserve. In spring 2016, I visited Rùm, Scotland, an island now sheep-free, and noticed the dramatic difference in vegetation compared with the parts of sheep-infested mainland Scotland I had experienced before.
Where may I find parts of Iceland where sheep are banished and where natural vegetation is given a chance to recover¹?
¹Not counting ice caps and glaciers and their immediate vicinity which are naturally free from vegetation.