This happened on our tenth wedding anniversary. I took Sue back to the hotel in Scotland where we spent our honeymoon. On the honeymoon we had borrowed a caravan and traveled up to Scotland with it and then had a week in the hotel and then traveled slowly back home. Now on out tenth anniversary we were doing the same thing, but this time in our own motorhome. The trip up was good and the stay in the hotel was great. Then we were on our way back home and our second stopover was at a small village that originally had a dozen or so shops, two pubs and a campsite. I pulled off the main road and headed into the village. It looked pretty much the same, although one of the shops had closed and gone. We got to the second pub that was next to the campsite and that to had closed and gone. We got to the entrance to the campsite and there was a big notice that said they had gone out of business and was closed. It was almost four in the afternoon and Sue asked what was we going to do and stay that night now the campsite was closed. I told her I had an idea. The last time we were there we walked along the river from the campsite one evening and found a large carpark and picnic facilities along with toilets. I suggested that we had everything we needed and could spend the night there. Sue quickly agreed and I turned the motorhome around and headed for the carpark. When we arrived we were the only vehicle there and we soon was set up for the night. I suggested that we walked back into the village and had something to eat in the pub that was still there. Again Sue agreed not wanting to cook. As we walked along I reminded Sue of the last time we were there that the carpark was used by courting couples and we had seen one couple fucking outside their car. We laughed as we walked about a mile to the pub. The food was limited and just about acceptable and the beer was flat. We started the walk back a little disappointed. When we got to the carpark we were surprised to see eight other vehicles in the carpark and not one person to be seen. We thought it odd and was about to get into the motorhome when we heard a cheer coming from the forest area the other side of the carpark and picnic area. We looked at each other and started towards where the cheer had come from. We followed a well walked track into the trees. We hadn't gone that far in when we could see movement. We were stopped dead in our tracks when we saw a woman of about forty years old on her knees on a blanket. In front of her was a man with his cock out and thrusting it in her mouth. Beside her was another man and she was wanking his cock. A third man was behind her, he was fondling her good sized pair of tits, that were bare. To their left was four more men all with their cocks out. One was a tall lad that looked half the woman's age. Next to him was a man that looked old enough to be his grandad and the other two were probably mid thirties like Sue and I. We watched the man in her mouth come on her face and the old man walked over and handed her a towel and she wiped the cum from her face. The man that had cum walked over and joined the other four as the old man also returned to the group. The man being wanked now took his turn at the woman's mouth and then she wagged a finger at one of the group and one of the mid thirties men joined her and she started to wank him as she sucked the second man. We were so engrossed with the action that we had not noticed two more men had came up us from behind. It was only when Sue jumped a little that I saw that one of the new men had put his cock in Sues hand and and was using it to wank him. The other was rubbing his cock on Sue's arse over her skirt. I looked at Sue and she just shrugged. She didn't seem concerned so I turned back to watch the action in front of us. Not many minutes later Sue groaned and when I looked back at her the man had cum on her hand and the other one was massaging her tits inside her blouse. Again she just shrugged. Looking back at the action the woman was wiping another load off her face. The other mid thirties man was preparing to use her mouth and the man behind her now had her panties down an was fingering her pussy. I was just beginning to wonder how far this was going and I was looking forward to getting Sue back to the motorhome for a good fuck. Then I felt a few drops of rain, followed by a flash of lightning and then a clap of thunder. Then the heavens opened and everyone was rushing back towards their cars. We had some light weight rain suits in Sue's bag and were quickly putting them on. All but the tall lad and the woman had fled. He had folded her blanket and he had produced a tarpaulin that he now held over the two of them. The four of us were now walking back toward the carpark. By the time we got there only one car and our motorhome was still there. I was shocked when Sue invited the woman and lad into our motorhome. They agreed and once inside I was making coffees for everyone. Sue was asking the woman, who introduced herself to us as Tessa, about what was happening before the rain. Tessa told us it was called dogging. We had never heard of it and she was telling us that it was a place to go for free sex. There was always too many men and too few women. The women that did go could choose who and how many men she interacted with. She went on to tell us that she would suck as many as she could, but would select just the odd one to fuck her if she fancied one of them. I looked at the lad and Tessa saw me looking and explained that he was Philip and was her husband. I was surprised he was probably half her age. She said that he enjoyed watching her with the men and if there was another woman would get a suck or fuck if he could. I could see Sue wriggling on her seat. That's always a good sign that she is getting worked up for a good fucking. I still had a semi stiff one from the action earlier. We talked a bit more about some of Tessa's exploits and then Sue suddenly stood and grabbed the lad and dragged him into the sleeping area with her and shut the door. Tessa had now turned to me and was kissing me and then tongues were traded. Then I heard Sue gasp, "Oh my god," followed shortly afterwards by a loud squeal and then an even louder groan. Then I could feel the motorhome rocking. My wife was getting fucked! As far as I knew both she and I had been faithful up to that point. Tessa could see my concern and her hand slipped inside my trousers and grasped my cock. It was getting hard pretty quickly as she continued to play with it whilst undoing and pulling down my trousers. I thought I was in for a cock sucking like the men in the woods. Then Tessa said, "Shame there's not another bed." I told her there was and cleared the table and lowered the bed from above. As I lowered it Tessa had stripped down to pants and bra and climbed onto the bed. I finished stripping and joined her. I was about to kiss her when I heard Sue groan like she does when she comes. Tessa laughed telling me that Philip always makes them cum. "He always pleases," she added. From the rocking he was far from finished. Tessa undid her bra and pulled my face into her tits and I was kissing them and trying to get my fingers in her pussy when I heard Sue groan again. It wasn't unusual for her to three of four orgasms in one fucking. Philip was still going. Now with my fingers buried in Tessa's pussy, she too came with a loud groan. Our bed was smaller than the one Sue and Phillip had and there wasn't much room for maneuvers. Tessa helped me get her panties off and then I was between her legs and about to stab her pussy with my cock when I heard Sue come again. Three times and Phillip hadn't even slowed by the rocking of the motorhome. Tessa groaned as I penetrated her and we were mimicking the rocking that Philip was giving Sue. Tessa was a quiet lover and made virtually no noise as I plunged into her. Although it was a good fuck and Tessa was thrusting back on my cock, I always enjoyed the noisy ones more. Then I felt Tessa's pussy tighten and she barely moaned as she shook and came. Unlike Sue who groaned yet again. Phillip was still pounding on. I managed to keep going for another three or four minutes when Tessa's pussy tightened again. This time she did groan a little more as I pumped my cum into her pussy. As we lay there Sue groaned two more times before Phillip grunted and groaned and finally stopped. I needed the toilet and climbed off the bed and opened the door to the bedroom area as the toilet is in that area. Phillip looked half dead sprawled on his back and Sue was on her back with her legs wide open and a mass of cum leaking from her pussy and down her thighs. I had a pee and Sue got up and had one after I did. Tessa was also now up and dressed. She called out, "Come on lover boy, lets get you home. As he got up his cock now limp was dangling down his legs. It must have been eight inches long even in that state. No wonder Sue had come so many times with that thing pounding her pussy. She was only used to my six and a half incher. Phillip was dressing and Tessa was talking to Sue. Once they had gone I asked Sue what had been said. Sue told me that Tessa had thanked us for our hospitality. Then she had said that she wouldn't need much of Phillips cock before she could sleep tonight as I had done a pretty good job. Then she had handed Sue a phone number and said if we were still here tomorrow night we were welcome to visit them at their home. I asked Sue what she thought and her answer, "Well another night won't hurt." We ended up staying another two nights with Sue groaning on that long cock. Our last night I went with Tessa to another dogging site where she sucked six men and they watched as I fucked her doggy style and she sucked one of them at the same time. We fucked again back at her house, listening to Sue moaning on the end of Phillips cock again. We are getting close to our fifteenth wedding anniversary and was looking to go back to Scotland, but of course that has had to be put on hold. As has the visits that Sue has when I take her to our local dogging sites.