Start your tour at the meeting point in central Reykjavik. Climb aboard the comfortable tour coach and head out through scenic Borgarfjörður, toward Húsafell.
Make a stop at Europe's most powerful hot spring, called Deildartunguhver, and the lava waterfalls at Hraunfossar. Take a short break in Húsafell.
Arrive at Víðgelmir cave, one of the world's largest natural lava caves, for a guided trek into the earth. Admire the cave's striated colors and unusual rock formations while your guide talks about the history and geology of the cave, which was discovered in the Viking age.
On the journey back to Reykjavik, stop at the Húsafell geothermal pool to relax your muscles.
