Complex sentence: Some karst topography is evident and the limestone is honeycombed with caves including several commercial tourist attractions such as Luray Caverns, Shenandoah Caverns, and Skyline Caverns.
Split into simpler sentences: Some karst topography is evident, and the limestone is honeycombed with caves. Several have been developed as commercial tourist attractions, including Luray Caverns, Shenandoah Caverns, and Skyline Caverns.