Nic727 wrote: "In the future I will try to do a data import using recent geological and vegetation data for Reykjanes peninsula and the whole island."   I think the lack of suitable tags for sparsely vegetated landcover (but not bare rock) needs a discussion. Iceland has this (sparse moss and lichen) but many other places as well in arctic regions or high up in mountains.  On the tagging email-list or on OSM-wiki? The icelandic email-list should be informed as well, I think. 