(Tue/Thu/Sat, duration 8-9 hours): from £138
Located on the rift between the North American and Eurasian tectonic plates, the Reykjanes Peninsula is home to some of the most interesting geological features in Iceland. Your day starts with a caving adventure (headgear and lamps provided) into the fascinating underground world beneath the lava fields just outside Reykjavík. The next stop is at Lake Kleifarvatn, where petrified formations in the form of trolls have led to some to believe the mystical creatures live in the lake! A short drive away is Seltún, with its boiling mud pools and colourful steaming landscapes. Passing the fishing village of Grindavík, you continue to Gunnuhver, Iceland’s largest mud pool. A stop at the Reykjanesviti lighthouse and a visit to the symbolic “bridge between the continents” conclude your tour. A pick-up and drop-off at your hotel from 08:30 is included but lunch is not.