Khao Khanab Nam are two majestic 100-meter tall twin limestone rocks standing on either side of the Krabi River at the entrance to Krabi Town. These stunning geological formations are considered the symbol of Krabi Province and its most iconic landmark. The caves within the rocks contain ancient human skeletons dating back thousands of years. A boat trip through the mangrove forests to reach these natural wonders is one of the most scenic experiences in Thailand, offering a glimpse into the region's prehistoric past.