Blue Water Cave

Blue Water Cave is a natural limestone cave located in Barangay San Miguel, Baggao, Cagayan, in northeastern Luzon, Philippines. It is known for its clear, blue-tinted pool inside the cavern fed by spring water, surrounded by stalactites and stalagmites. The cave is part of Baggao's karst landscape and is accessed via a trek through forest and river trails. It is a popular eco-tourism site for caving and swimming.

Visitors can expect a trek from the jump-off point in Barangay San Miguel through forested trails and shallow river crossings to reach the cave entrance. Inside, the cave has a cool interior with limestone walls, stalactites and stalagmites, and a clear bluish pool ranging from shallow to chest-deep where wading and swimming are possible. The site is natural and minimally developed, with guided exploration limited to the main chamber and pool area.