two brown pack horses on a stone hiking trail in sierra de gredos mountains, spain

animal avila back bag brown carry carrying castile desolate dirt europe footpath goods grande great gredos hiking hill horse horses lagoon laguna lake leon mountain mountains nature outdoor pack packhorse pannier park path plataform platform range refugio regional ridge rock route rugged shelter sidebag sidebags sierra spain spanish stone sumpter surface track trail travel trekking two