Entrance is small, about 2m wide. Hugging the cliff face, you can hear the water beneath in cavities.
The water is draining somewhere below, on the left of entrance is a tunnel but is blocked by rockfall. Following the stream bed which is about 20ft across and 6-9ft high with rockfall on the right.
Reaches a siphon after 25m+. Accessible in dry season leading to a long tunnel about 5ft high that continues on for at least 80m and comes to a sharp bend.

Yet to explore further, appears the river cutting this tunnel may run northerly through the mountain as more cavities are found 100m north of the entrance.