Information provided by Hans Bornman from his unpublished book, Lowveld Tour Guide:
Take the R539 north, 5 km east of Montrose, for approximately 8 km to the caves, situated in the rocky Mankelekele mountain range.
Weirdly shaped stalactites and stalagmites are cleverly illuminated by electric light displaying their brilliant true colours. The Sudwala Cavern complex is dominated by a chamber known as the P R Owen Hall. The chamber is roughly circular 70 metres in diameter and reaches a height of 37 metres to the peak of the domelike feature of its roof. Notable on the ceilings are specimens of fossilised algae called Collenia, a form of life that flourished 2000 million years ago.
Several choral performances have been given in this hall. Recordings were made of these performances and it was found that the acoustics were excellent.
The caves have vast halls and caverns and are electrically lit, showing up to best advantage the strange shapes of the limestone pillars. Some 1500 feet from the entrance cool fresh air makes its way through the subterranean passages from an unknown source.