To stand on each of the 4 extreme points of Shetland. Project completed.
North. Out Stack, Unst.
East. Bound Skerry, Out Skerries.
South. The Skerry, Fair Isle.
West. Da Rokness, Foula mainland. Da Rokness Skerries are marginally more westerly but are likely to be regularly submerged in all but the calmest weather.