 A stark refuge hut (built 1934 as a shelter for shepherds and hikers) and the "Santo Cristo" hermitage lie by the summit.The Zegama-Aizkorri Marathon, a popular cross-country endurance race, takes place in spring along a loop circuit around the Aizkorri massif (sometimes including Aratz).Adding to the appeal of the range, the whole Aizkorri and Aratz area was declared the Aizkorri-Aratz Natural Park in 2006.