Grjotbreahesten is a mountain in Lom Municipality in Innlandet county, Norway. The tall mountain is located in the Jotunheimen mountains within Jotunheimen National Park. The mountain sits about south of the village of Fossbergom and about southwest of the village of VÃÂ¥gÃÂ¥mo. The mountain is surrounded by several other notable mountains including Finnshalspiggen and Nørdre Trollsteinhøe to the north, SmÃÂ¥dalshøe to the northeast, Trollsteineggje and Glittertinden to the south, Trollsteinrundhøe to the west, and GrÃÂ¥høe and Svartholshøe to the northwest.