Designed entirely of wood and shaped like a leaf, its name comes from the contraction of "Elorri Mendi," which means "the mountain of hawthorn," and "ondarea," meaning "heritage." This building is intended to welcome the public for the purpose of raising awareness about biodiversity. Visitors will find information about the Sensitive Natural Area of the Colline de la Bergerie, its history, and its management. The department of Pyrénées-Atlantiques offers nature activities there, including the observation of bees in educational hives installed by the "Nature et Abeilles" association from Larressore.