CCC Companies 879 and 881 arrived in June 1933 and began organizing their encampment, which they named Camp Washington Seawell, after the first commander of nearby Fort Davis.

Their developments in the park included roads, an overlook shelter, two mess halls, stone picnic tables, fireplaces and steps, a latrine and "Indian Lodge," a motel and visitor facility.

[3] The CCC also built the five mile scenic Skyline Drive, a series of switchbacks leading to multiple trails and viewpoints overlooking the park.

Shrubs such as scarlet bouvardia (Bouvardia ternifolia), little-leaf leadtree (Leucaena retusa), trompillo (Ipomoea hederifolia), evergreen sumac (Rhus virens), fragrant sumac (Rhus aromatica), Apache plume (Fallugia paradoxa), little walnut (Juglans microcarpa), tree cholla (Cylindropuntia imbricata), Torrey yucca (Yucca torreyi), catclaw acacia (Acacia greggii), and agarita (Mahonia trifoliolata) abound.

Woodhouse's scrub jays, white-winged doves, curve-billed thrashers, white-tailed deer and rock squirrels are among the most common wildlife seen.