Complex sentence: There are no facilities, toilets, or other markers at the Above All State Park, but there are some informal trails near the top of the park that are not maintained or marked by the Connecticut Department of Energy and Environmental Protection.
Split into simpler sentences: There are no markers, toilets, or other facilities at the Above All State Park. The park has some informal trails near the top of the park that are not maintained or marked by the Connecticut Department of Energy and Environmental Protection.