Krisuvik is a highly active geothermal area on the south of the Reykjanes Peninsula. The main area is called Seltún, and has marked trails, wooden boardwalks and observation platforms. At Seltún there are steam vents, boiling mud pools, and fumaroles. The area is quite colourful and the earth can be a green, yellow or red hue, or combination of these colors. During the 18th century, sulphur deposits were mined in this area. Sulphur is one of the ingredients of gunpowder. The area is surrounded by colourful mountains and Kleifarvatn Lake is close by.

Parking lot GPS: 63.895723, -22.052551