Caves are natural underground space that is perfect for person who love to explore and see uniques things in the world. Caves are preserved to maintain its organic structure. Caves can be found throughout the world but small portions of them are only explored and documented by the cavers probably because of inadequate space to explore and absence of entry. But caves supernatural formations are undeniably enchanting. So far the best cave for me is the Waitomo Glowworm Caves located at North Island, New Zealand. It is exist for more than 100 years and attract people because of its glowworm that produces amazing sight to see. Hopefully I could visit this cave soon, looks fantastic.