Brecon (7), Brecknockshire.
The climb down from the public footpath or car park to Porth-Yr-Ogof is not easy as there are frequent patches which are very rough and may well require the use of handholds. You will need stout footwear with good soles for this. Once down to river level the way forward is on an obvious rock ledge above water level which leads straight into the cave from where this picture was taken.
It is very popular with cavers, as you may have noticed, even though a number of cavers have been drowned in this cave.
Meadow Cranesbill (Geranium pratensis) is a limestone loving plant so that it was no surprise to find it growing around Ystradfellte.
The little village of Ystradfellte, seen from the higher ground around it, nestles in the northern part of the valley of the River Mellte due north of Pontneddfechan by the A465 road.
This area of limestone is known for its caves and waterfalls.
The River Mellte by Ystradfellte at the point at which it disappears underground. The river bed still runs overground from here but was dry when we were there (I'm standing in it) although I imagine the river will run overground when there is a surplus of water in rainy weather.