'Heaps of creeks must feed into this one to make these falls,' says Fuzzy.

'How high do you think they are?' says Tommy Tompson.

'Oh, about 9 metres,' says Fuzzy.

Scott's dad lifts Fuzzy up so she can see the creek pouring down into the basin before the falls. The heaviest part of the fall falls onto a dolerite boulder about 80 cm across.

'I wonder how long will it take the water to wear down that boulder?' says Tommy.

'Yonks,' says Fuzzy.