Ke Bang Limestone is a significant geological formation located in Vietnam. It is part of the Ke Bang National Park, which is known for its stunning karst landscapes, featuring limestone hills, caves, and diverse ecosystems. The limestone is estimated to be over 400 million years old, making it one of the oldest formations in the region. The area is rich in biodiversity, hosting numerous plant and animal species, some of which are endemic. Ke Bang Limestone is also recognized for its unique geological features, including extensive cave systems like the famous Phong Nha Cave, attracting both researchers and tourists interested in natural wonders.