Prismas Basalticos is a natural wonder located in the state of Hidalgo, Mexico. The site features hexagonal basalt columns that were formed by the cooling and solidification of lava millions of years ago. These columns rise up to 30 meters high and are arranged in a unique pattern that resembles a giant pipe organ. The surrounding area is also beautiful, with crystal-clear water cascading over the rocks and creating a series of natural pools. Visitors can swim in the pools, hike along the river, and take in the stunning views of the basalt columns. The site is a popular destination for tourists and is easily accessible by car from Mexico City.