Wind Cave, National Park, South Dakota nbsp; This profusely illustrated official National Park Service Handbook describes and illustrates the discovery later development, and natural attractions of Wind Cave National Park in South Dakota, known as one of the world’s longest and most complex caves. Its 28,295 acres of mixed grass prairies, ponderosa pine forest and associated wildlife are the main features of the park. The Wind Cave also is well known for its outstanding display of boxwork, an usual formation of composed of thin calcite fins resembling honeycombs. The book also includes an authoritative guide to the park. Travelers to South Dakota will want to put this National Park on their to-do list!