In 2009, IAT discussed with the British Geological Survey in Scotland whether to extend the IAT to the Appalachian terrains of Scotland, Ireland (Slieve League), Northern Ireland, and Wales, setting off a series of expansions through Europe and Northern Africa. As of July 2020, there were IAT walking trails in Greenland, Iceland, Norway, Sweden, Denmark, Scotland, Northern Ireland, Ireland, Isle of Man, Wales, England, Norway (where it follows the North Sea Trail), Spain, Portugal, and Morocco.