Complex sentence: The potential for tourist attractions associated with this geological feature is indisputable with walls up to 100 feet tall, beautiful waterfalls, caves of sandstone and basalt, and even a gallery forest and well-preserved primary hillsides can be found in narrow valleys still unexplored.
Split into simpler sentences: The potential for tourism associated with this geological feature is indisputable, with walls up to 100 feet tall, beautiful waterfalls, and caves of sandstone and basalt. A gallery forest and well-preserved primary hillsides can be found in narrow valleys still unexplored.