It was early autumn at the centre, the sun was still shining, just not as warm as it had been, the leaves on the trees were just beginning to turn orange and brown, and we had less guests in now, than we had been having.
This is why, on a quiet Sunday afternoon, a group of us were sat in the staff room, chatting and chilling with not much else to do, when the conversation turned to the extreme club.
Now, the extreme club was a mythical club that existed at the centre, and to become part of it, all you had to do was have sex somewhere on site, but in the most unusual, or public place possible, without Tony the manager catching you.
Of course a lot of the guys bragged they had joined the club, but only those who had been seen, or their partner had backed up their claim, could truly be in it.
Anyway, as we sat there talking about it, and some of the guys boasted about their accomplishments, Karen, a tall plump instructor, with long sandy blonde hair that hung down over her shoulders, muttered how she would join the club, but her boyfriend Tim didn't want to, because he was worried they might get caught.
We all had a bit of a laugh about that, and then continued chatting, however, I sensed an opportunity, and a short time later, after the others had wandered off to do other things, I keenly spoke to Karen.
"So... Are you serious about joining the extreme club, because, if you really want to, I could help you out there?" I said casually, with a smile.
Karen looked back at me rather surprised, before she whispered back "Really? You want to help me, join the extreme club?"
Now, I understood her confusion, even though we worked together, and lived together, we barely hung out that much, and only chatted every now and then, but, she was pretty, and very friendly, and appeared to have a huge pair of boobs under her t-shirts, so, why not?
"Yeah. You sounded like you really wanted to, so, I'd be more than happy to help, if you want?" I replied back with a smile.
Karen stared back at me for a moment clearly thinking it over, before she smiled, glanced around, and then replied eagerly "Okay. Come on!"
She then grabbed my hand and stood up, and after she had pulled me out of my seat, she led me swiftly towards the door.
Seconds later we were marching swiftly through the old manor house, towards a side door, before we stepped outside, and then marched across the car park towards the high ropes courses in the woods.
"Where are we going?" I asked curiously, wondering what spot she had picked, to do this in.
"The Billy course, tree three!" she replied eagerly back, still leading me by the hand.
The Billy course, tree three, was the second high ropes course we had in the trees, it was named after it's designer Billy, a former instructor who had come up with the idea and built it, and tree three, was the third platform along it.
Now tree three was the almost perfect place to have sex in the open, the platform was large and wooden, and surrounded most of the tree trunk, and the trees canopy hung down so low there, you could barely see it.
So, keenly we continued towards it, and when we reached tree three, we quickly started to climb up the rope ladder that hung off of it.
After a little effort, we soon arrived at the top of the ladder, and climbed onto the platform, and for a moment stared out at the grounds of the centre, in all directions in front of us.
It was one of the best places to view the whole centre from, between the low hanging branches, and I did enjoy being up there for that, but, we weren't up there to enjoy the view.
So, I then turned to face Karen, and she looked keenly back at me, before I stepped closer to her, leant in, and we started to kiss.
Eagerly our soft lips pressed together, before our mouths opened, and our tongues began to explore each other's mouths.
As we excitedly kissed each other, our hands started to wander over each other's bodies, and my hands soon found her warm soft crotch between her thick thighs, while hers, found my eager bulge.
We then started to fondle each other, as we continued to kiss, and pretty quickly I could feel her getting warmer and damper between her legs, while my bulge was growing fast, and straining against my cargo trousers.
It wasn't long before we were both so excited, we started to undo each other's trousers, and after fumbling with buttons and zips for a moment, we finally had them undone, and hands quickly slid inside.
We both then groaned in pleasure, as I slid my fingers into Karen's furry little pussy, while she keenly grasped my firm cock.
Then excitedly, I started to finger her cunt, pushing a couple of digits into her warm wet hole, and moving them in and out, and as I did that, she started to stroke my dick.
As we fingered and tugged each other, our moans of pleasure increased, and soon we had stop kissing, so we could breathe.
"Oh yeah! Oh yeah!" she moaned softly, as I continued to pump her little pussy with my fingers.
"Oh yeah!" I moaned in delight, as she jerked my firm length.
For a good minute or more we eagerly continued like that, keenly getting each other very excited, until Karen looked at me, and said excitedly "Put your cock in me! I want to be fucked in this tree!"
She then pulled away from me, pushed her trousers down until they were down around her ankles, and after stepping out of them, she then leant forward, placing her hands against the trunk of the tree for balance.
Karen was now half naked and for the first time I could see her big round pale arse, her thick white thighs, and her furry blonde pussy.
It wasn't super hairy, just neatly trimmed, and it looked very inviting.
So, I quickly pushed my trousers off, and after stepping out of them, I moved up behind my colleague, placed my hard member up against her furry pussy, and with a thrust, slid into her.
Karen instantly moaned in delight, as I slid deep into her wet cunt, and then holding onto her thick waist, I started to pump back and forth inside of her.
"Oh yeah! Oh yeah!" she moaned happily, as I started to fuck her.
"Fuck me in this tree! Fuck me in this tree!" she then said excitedly.
Now I have to admit, I never really imagined Karen would be this adventurous, but it appeared she was, and I liked it!
So, keenly I kept fucking her from behind, and as we stood thirty odd feet up in that tree, where anyone might see us, Karen groaned in delight, and begged for more.
