The route explicitly enters Kerlingarfjöll. Access is via the F35 and requires a 4x4; it notes that all rivers along the way are bridged.
Kerlingarfjöll
Arrive at the base of the Kerlingarfjöll mountain range, a stunning area of rhyolite peaks painted with geothermal colors, offering breathtaking panoramic views of the central highlands.

Hveradalir
Hike through Hveradalir, a vibrant geothermal valley within Kerlingarfjöll, characterized by steaming fumaroles, bubbling mud pots, and multi-colored rhyolite hills. The terrain is uneven with marked paths, offering an otherworldly experience.
Gýgjarfoss
A beautiful waterfall cascading over rugged cliffs, Gýgjarfoss is often overlooked but offers a serene stop with views of the river and the surrounding highland landscape.