En route, several yellow and green spadix of the aroid, Amorphopallus, lined the right side of the trail. Nearer the cave entrance, pink cup fungi and a ginger flower were seen on the forest floor. Gunung Lanno has two cave systems located side by side. The entrance to the first cave is a low passage, requiring a belly crawl of several metres. The passage enlarges to a chamber with several columns. Other than a few stalactites, the roof is quite barren. Towards the left side of this chamber there is a smaller one with walls of calcite deposits that sparkle like millions of tiny diamonds. The passage then narrows down to a one metre tunnel flooded with a few centimetres of water.

This tunnel then expands into a wide but low and long passage through which we had to stoop and at times duck-walk. At the end of this passage is a 10-metre diameter cavern where some of the most beautiful formations are found. Grouped in the middle of the cavern are several columns, stalactites and stalagmites of various colours and lengths. The tall, white knobbly stalagmites can rival those seen in the King's Chamber of the Wind Cave of Mulu Park. Large wavy calcareous curtains compete for attention. It's truly a good reward for those who had lugged their cameras in.

To the right of the entrance of the first cave, a belly crawl leads to a dead-end chamber that can accommodate five cavers at the most. There are some rust-coloured slender columns in this cave. The entrance to the second cave is connected to the entrance of the first cave by a small narrow passage. Like the first cave the entrance passage is narrow but has a bit more head room. This cave is one long chamber with very few formations. The most notable is a two-metre sized formation that looks like a "snowman's head" as described by one of the cavers. This cave terminates in an opening about 6 metres above the forest floor. In a small side chamber Kok Kai showed us some white lizard egg shells cemented to the ceiling. The owners could not be located.

In both caves, the fauna is scarce. Both caves are devoid of smelly guano – the base of the pyramid in a cave's food chain. In the first cave a few bats were hastily evicted by the noise and lights of the group. A racer snake left his calling card behind – a piece of moulted skin! At the entrance to the second cave, two mounds of faecal pellets betrayed the existence of the elusive Malaysian Mountain Goat – Serow or Kambing Gurun. The second cave fared a bit better – several white millipedes, a false scorpion and two cave spiders were seen. (Report by Dr. Chan Ah Lak)