Brimketill hot spring, naturally shaped in a pool, is formed by the endless surf breaking on the lava rock coast. The legend has it, the spring was regularly occupied by female troll Oddný, from where it takes its name—Oddnýjarlaug. For that reason, you may hear the jokes that the place is solely for trolls, not for humans, and multiple signs will warn you about life-threatening risks you undergo if you adventure to swim there.
Believe it or not, but take into consideration that nature plays tricks at times with its visitors. You risk being swept away from the platform by strong blasts of wind or unexpectedly soaked by huge waves into the ocean. Anyway, easily reached from the road 425, the Troll Pool will treat you with magnificent vistas and a large portion of adrenaline.