The forces of nature collide at the dramatic Reykjanes Peninsula, an expanse of lava flows, protruding lava cones and craters where the Mid-Atlantic Ridge rises from the ocean. Observe one of the world's biggest northern gannet breeding colonies before visiting the bubbling mud pools of Grunnuhver.
Tracing the peninsula headland, you begin at the major fishing point of Sandgerdi before heading up and over moorlands to a 19th-century stone Lutheran church. Proceed through lava fields to a site where the Eurasian and North American tectonic plates split, and cross the symbolic footbridge over the fissure.
Have your binoculars and camera ready for the view of Eldey Island and the large Gannet population – its dramatic location in the ocean is worthy of a photograph or two. Hear ghostly legends at the geothermal mud pools in Gunnuhver. Take the opportunity to leave the tour and soak in the Blue Lagoon's healing waters and make use of its spa, or return to Reykjavik.