The province is part of an extensive karst belt that stretches through eight provinces in southern China. The karst areas shown on the map occur where soluble rock, primarily limestone, is exposed ...

Getty Images/iStockphoto Tsingy de Bemaraha National Park, in northwestern Madagascar, is filled with breathtaking shards of karst limestone. Creating a landscape of sharp, jutting rock ...

However, concerns remain about spreading biosolids over limestone rock formations beneath farm fields, known as karst. In New Scotland, the material was applied over the region’s karst geology ...