Using her nails, she raked his balls softly until they tightened up and a rough groan told her that he was enjoying this. She could feel him jerking a...ainst her hand and sliding down onto her knees, she pulled the blanket over her head. Sucking him into her mouth, she started nibbling on his massive erection. It took all her control not to gag on his size. Gail relaxed her mouth and pushed him right back into her throat, she could feel the tension in his penis and Paul was starting to get very. They scrambled down to the lower pool and looked for its outlet. It was another waterfall, but only about 4 feet high this time. The stream from this waterfall ran into a hole in the wall and disappeared. Who knows where it eventually came out?Doug was overjoyed—that middle waterfall represented a tremendous amount of potential energy if only some of it was harnessed with a water wheel. More exploring was certainly needed, but this cavern looked like the answer to all their needs for living. “Fuck, your mouth is too good, I don’t want to cum so fast again. Here, roll over so I can lick your butt and suck you off too.”I rolled over onto my belly, spreading my legs. I felt her pull my cock down from under me and start to slowly lick up and down my shaft. The position was a bit awkward, but the feeling was amazing. Then I felt her tongue delve deep into my ass, making lift my butt up and groan. I was more or less on all fours as her hand gently milked my cock as her tongue played. When we got to Cripple Creek, we got Gina checked in and I found out that she was able to check into a single room next to my wife and I,..... and it had adjoining doors! We quickly joined the rest of the family for a late supper!The whole bunch was planning to go down the street to gamble til they dropped and I begged off because i was really tired from the trip not to mention my wild sex with Gina! She joined the group and off they went and I went into the bar. I had a couple beers and headed.