Complex sentence: Ohio Department of Forestry was the first owners and operators of the park, but in 1949, the Ohio Department of Natural Resources and the Ohio Division of Parks assumed control of Old Man's Cave (as well as the rest of the park).
Split into simpler sentences: Ohio Department of Forestry was the first owners and operators of the park. In 1949, the Ohio Division of Parks and the Ohio Department of Natural Resources assumed control of Old Man's Cave (as well as the rest of the park).