Þríhyrningur (Thrihyrningur), (“the Three-Horned-Mountain”) lies within plain view of Hotel Rangá and is only about 15km distant. It is a monument in South Iceland and visible from great distances. It is a great mountain to ascend and hike up to the top. The hike takes about 3 hours for experienced hikers - when favorable conditions exist. The ground on the trail can be a bit loose during the ascent – why good hiking boots, a hiking cane and a decent water supply are a must. No one will be denied their ultimate satisfaction after reaching the top to view the stunning panoramic outlying landscape of South Iceland.