This isolated park is situated near Miri, Sarawak and has the world’s largest limestone cave system. We also saw clusters of tall limestone pinnacles. Make sure you don’t miss out on the caving and the pinnacle trekking experience. Otherwise, there's no point in travelling all the way to this UNESCO World heritage site. We visited the Clearwater Cave, resting over some underwater river system. This is the perfect place if you are in search of solitude. Deer Cave is a magical and astounding place. It is the largest cave passage in the world. An unbelievable masterpiece formed by the stunning limestone stalactites. It houses 3 million bats high up the ceiling. Once out of the cave, you can see spectacular formations made by the bats in the sky that are hungry and in search of food. This is one sight which left me in awe.