We decided to visit Linville Cavern after we left Grandfather Mountain. Took about 30 minutes to get there. We arrived around 415 and barely made it in time for the tour. Our guide was very good. He took the time to show us little things that weren't noticeable to the naked eye. The cavern was awesome with all of the different formations. When the guide told the grouo that we were over 2000 ft below sea level his eyes got really big. One of those moments you never forget. I highly recommend linville caverns as a must see if you're in the area.