Cascade de la Gueule d’enfer is an unknown waterfall with a single drop of 250 meter, located along road N102 at Thueyts in the Ardeche, France. At least when there is water in the river.
When driving on road N102 there is a big parking at the bridge with three big flags. This is the viewpoint la Gueule d’enfer. Park the car here for free (gps 44.675310, 4.223773).
First thing I did (april 2023) was to walk to the viewpoint on the bridge. Here you should see the waterfall beneath the bridge. Unfortunately there was hardly any water in the river…. I think it is quite rear to see a real waterfall but I can imagine that after heavy rainfall you can see a nice waterfall.
You also can walk down along the gorge following the signs “pont Diable”. A gorgeous trail but still I didn’t saw water falling down, a little bit disappointing….
Another option is to go back to the car and drive east for 1 kilometer, in the direction of Aubenas, until there is a small sign (pointing right) “viewpoint pont du Diable”. Drive down the road for again 1 kilometer until you are driving over the river again to have a view.