As Jane states, about 100 metres further along the path past Parc Le Broes on the right hand side in the trees on the bank. It can be a little tricky to find but just look for the ‘path’ made by people through the undergrowth and you will soon see it – about half way up the valley side. Unfortunately when I visited I didn’t take a torch with me so I didn’t go too far into the cave. From what Jane ssasy it sounds like it goes backa fair bit. One to re-visit – with a torch!!