I discovered this place while looking for a means of access to my cache "Hommage aux soignants", which is nearby. This place has the advantage of being well sheltered from cars and of being, in my opinion, a little more accessible. The panorama being at least as beautiful there I decided to put a second cache there.
To get there, I advise you to go through the reference point that I called "point d'accès", because it seems to me that accessing the cache is then easier (less brambles and height difference), but nothing forces you to go there!
To observe the landscape, go to the reference point entitled "le promontoire". At this place you have in front of you the Porcheville chimneys, on your right an unobstructed view of Bonnières and on your left the cliffs which overhang the Seine. By leaning a little you should see the keep (medieval remains) of the castle of La Roche Guyon
Since I found cigarette butts on the promontory, I considered it more prudent to put the cache a bit out of the way, but beware that you may not be alone in wanting to enjoy this landscape. If there are people, try to be discreet for the durability of the cache, thank you in advance.
I will also ask you not to take photos of the cache, however you can have fun with the landscape!
NB: Not being at all multilingual, I "entrusted" my translations to Google, so if you see improvements to offer me, do not hesitate, I'm interested.