Coomba Falls is a short drive from the town Maidenwell. The waterfall comes through a wide gorge of granite cliffs before falling into a deep waterhole.
The Aborigines believed the waterhole to be bottomless and Coomba Falls a sacred site, and the surrounding area was used for burials. There are mentions of a massacre of hundreds of Aborigines by European settlers, although I haven’t been able to find any information about it, other than stories.
The waterfall cliffs offer opportunities for jumping into the waterhole below. The water was not flowing when I was there, being quite dry there wasn’t much water flowing anywhere. The waterhole, however, was still deep and cool and refreshing for a swim on a hot day.
There are spots to jump into the waterhole starting from not too high, and gradually becoming riskier as you go up. It is popular for jumping, but care is needed, with a person failing to surface in 2016 
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I’m not into heights much myself, so I watched from the sidelines while a group were trying jumping from different heights. One was contemplating a very high jump needing to clear the lower jumps but thought better of it and came back down for a lower one.
Beside the waterhole is a large grassy area to set up for a picnic lunch. The walk down is not too far but it has steps most of the way (I counted 126 steps). The stairs have been updated at some point, with the previous stone cut steps now only at the final part of the descent to the falls.
Camping at Coomba Falls is not allowed and there are no facilities there. Public toilets are at Maidenwell, not far before the falls. You can overnight camp near where the toilets are, which also has a BBQ, undercover table and seating, and a bin. Alternatively, the Maidenwell Pub lets you camp in the paddock behind it. From the pub, you can walk across a sports field to a toilet block with hot showers.
