My girlfriend at the time and I were at a friends place for a party, his place overlooked a river and was perched on top of a huge cliff overlooking a river and valley.

I had been having a great time with some people and noticed my girlfriend had moved down to the fence overlooking the sheer drop so I went down to see her and offer her a drink.
As soon as we got together we both started to get very hot for each other and after kissing her and nibbling her neck from behind I looked down over the cliff face and saw a small tiny ledge about 20 feet below us.

I suddenly I had this crazy and overwhelming desire to fuck her on this ledge and put it to her that we should do so. She was excited immensely by the suggestion and dared me to do so. Panicked but very keen we both decided it would be a great sensation and a huge thrill to try it so we moved very carefully down the tiny rocky path that led to the ledge.

Soon we found ourselves at the point we had zoned in on, it was no more than 1 and half foot wide and against a sheer rock wall with a 150 foot drop to the water and rocks below.

Pushed by the mad urge to go through with our dare to each other we lustfully but ever so carefully got into each other, I stood with my back to the drop with her pressed firmly against the rock face while she clutched what ever part of the rock face she could to secure herself, I peeled her top and off and stripped her bra down revealing her stunning pink coral tipped breasts and began to kiss, lick and suck them while finger fucking her until she was so hot she was pleading for me to fuck her hard. Working ourselves up to an all time high I ripped open her buckles and buttons and then pushed down her jeans and panties while opening my fly to release a now throbbing cock and drove into her with all the fire in me. We fucked furiously hanging onto each other and the rock wall combined for the next frenzied five minutes until after over balancing and nearly falling several times we both came in a perfectly timed rush. After a quick catch of breathe and buckling at the knees we then quickly pulled ourselves back up the rock ledge to the safety of the fence line.

We exhaustedly then collapsed into each other on the grass and laughed our heads off as we both vowed to try and top that somewhere else in the future, which we did and...well thats another story.