A rally in Topanga to protest the Montevideo housing development project in Summit Valley, 1991. The Montevideo housing venture was first formed in 1982 to build luxury homes and a golf course on 660 acres at the top of Topanga Canyon Road. After 12 long years of struggle, the Santa Monica Mountains Conservancy purchased the land from Canyon Oaks Estates Ltd. and created Summit Valley Edmund D. Edelman Park. Topanga Historical Society. San Fernando Valley History Digital Library.