Among the park's highlights are Sao Hin and Nok Aen caves. The first is named after a a giant calcite pillar it houses that is 61 metres tall and is one of the world's tallest, while the second is an extended tunnel inhabited by thousands of birds. ``Nok Aen'' is the Thai word for swallow.

Both caves have a stream running through them. Each visitor is therefore requested to wear a life vest and a helmet for safety reason. The caves can be visited only during the dry season because the water can be fierce and very dangerous during the rainy months.

There are also two beautiful waterfalls in Lam Klong Ngu National Park, namely Namtok Klity and Namtok Nang Kruan.