After selling his interest in Esprit, Tompkins turned his efforts toward southern
Chile, where he had spent much time climbing, kayaking, and skiing, to focus on land conservation and environmental activism. He founded the Foundation for Deep Ecology in 1990, which supports environmental activism (see
deep ecology), and The Conservation Land Trust in 1992, now called Tompkins Conservation, which works to protect
wildlands, primarily in Chile and
Argentina. In November 1994, he married
Kristine McDivitt, a former chief executive of
Patagonia Pumalín Park Tompkins's first major conservation project was
Pumalín Park in the
Palena Province of Chile, an area of
Valdivian temperate rain forest, high peaks, lakes, and rivers. In 1991 he bought the Reñihué farm, a semi-abandoned farm at the end of the
Reñihué Fjord, planning to set aside of this unique forest from possible exploitation. In the next decade, The Conservation Land Trust added another in nearly contiguous parcels to create Pumalín Park, which eventually stretched from the Corcovado Gulf to the Andes mountains, over an area of 800,000 acres. In 2005, then-president
Ricardo Lagos declared this area a Nature Sanctuary, a special designation of the Chilean state, granting it additional environmental and non-developmental protection. The Conservation Land Trust (a U.S. environmental foundation) donated these protected lands to Fundación Pumalín (a Chilean foundation), for their administration and continual development as a type of National Park with public access under a private initiative. Through creating public-access infrastructure, including trails, campgrounds, visitor centers, and a restaurant, Tompkins sought to promote wilderness experience, in hopes of inspiring a deeper
environmental ethic in the park's many thousands of visitors.
Iberá National Park The Iberá project was a private conservation enterprise that was spearheaded by Tompkins, working with
George Soros,
Harvard University, and
Rewilding Argentina. Its goal was to strengthen protection and restore habitat and biodiversity in the
Iberá Wetlands in
Corrientes Province, Argentina. Iberá Provincial Reserve, established in 1983, encompasses 1,300,000 ha of wetlands, grasslands, forest, and rangelands, including both publicly-owned lands and private cattle ranches. The Iberá project advocated for enhanced protection of government-owned floodplain lands, and in 2009 the provincial government created Iberá Provincial Park on 553,000 hectares of public land in the reserve. Led by Tompkins, the Conservation Land Trust acquired 150,000 hectares of old cattle ranches bordering the provincial park, including habitats not then represented in the park. Most cattle and internal fences were removed, and a land management program was developed to restore native vegetation and habitat. In December 2015 the Trust donated these lands, including espinal, malezal
grasslands, and forests, to the Argentine government to create a strictly-conserved national park to be called Iberá National Park. The proposed park, which would total 700,000 hectares, would be the largest national park in Argentina and home to hundreds of bird species, giant anteaters, and macaw parrots. It would provide safe habitat for a range of native species, and encourage a transition from "an exploitative economy" to "an economy of conservation and
ecotourism". In 2018 the Argentine government created
Iberá National Park from the donated lands, while the provincial park is administered separately. and 800 km south of Pumalín Park == Organic agriculture ==