The Iwaya Caves are a series of limestone caves located on the island of Marinduque in the Philippines. These caves are known for their stunning rock formations and unique geological features. They are a popular destination for both tourists and researchers interested in natural history and geology. The caves also hold cultural significance, as they are believed to have been used by early inhabitants of the region. Visitors can explore the various chambers and tunnels, which often contain ancient artifacts and evidence of past human activity. The Iwaya Caves are a fascinating blend of natural beauty and historical importance.