In this 1970 educational film, naturalist Campbell Loughmiller guides a hike through the Big Thicket in East Texas, highlighting the forest’s varied flora and fauna. The forest is described as one of the most biodiverse areas in the world, encompassing habitats such as southeastern swamps, eastern deciduous forests, central plains, pine savannas, and dry sandhills. The US Congress established the Big Thicket National Preserve in 1974 in an effort to conserve the region and protect the many plant and animal species that live there.