Aventuras Naturales: Ecotourism operator based in Antigua. Offers jungle treks, archaeology, Maya culture, birdwatching, mountain bike tours.
Mayaexplor: Tour operator, based in Quetzaltenango and specialized in cultural and adventure travels.
Turismo Ek Chuah: Ecotourism agency offering tours including trekking, mountain biking and horseback riding with guides. [English/Spanish/French]
Unicornio Azul: Horseback riding at the Cuchumatanes mountains, focused on environmentally responsible travel. [English/French/Spanish]