Graduate student research on the flora and fauna of the La Cangreja Park near Mastatal. Includes maps, photos and data.

Eco-adventure theme park. Describes facilities, activities, and rates. In the village of San Juan de Mata at Turrubares , bordering the Tarcoles River.

Environmental learning and sustainable living center, 300 acre retreat and lodge near the village of Mastatal. Describes the property, activities and accommodations.

Learning vacations on a tropical herb farm offering basic conversational Spanish and courses in medicinal plants for natural health care. See the list of courses and make an application. Pedregoso, west of San Isidro de El General.