 The park has five CCC @-@ built picnic shelters : pavilions 1 , 3 , and 4 are made of stone and timber with stone fireplaces , while pavilions 2 and 5 each has log columns that support a pyramidal roof . The CCC also built six rustic latrines with clapboard siding and gable roofs , and an underground reservoir that is covered with a low hipped roof . Additional structures constructed by the CCC include three overlooks and a rectangular gable @-@ roofed maintenance building with wane edge siding and exposed rafters made of logs . The structures built by the CCC are noteworthy in that they exemplify the rustic style of construction that was prevalent at national and state parks built during the Great Depression . Workers used locally found , natural materials in construction that blended with the natural surroundings . Not all of the CCC 's work has survived . A concession stand was built by the CCC and sold food and souvenirs from the late 1930s to at least 1953 , but was not listed on the 1986 NRHP nomination form . The CCC also built a brick and stone incinerator , but it is in ruins now . 
