Where Did She Go?

This happened maybe 15 years ago. This sounds crazy but it happened. It was a hot summer and the location was a county park. One afternoon I was exploring a small creek beside a walking train in the park. I was actually seeking semi deep pools of water with minnows to catch for fishing bait. A car was parked near the head of the trail. Anyway I walked maybe 150 yards up the trail finding a couple of promising holes of water.
Then I hit the jackpot! IN 2 WAYS! I found a nice deep spot of water with tons of minnows. But I quickly noticed something else. About 50 yards up the trail through the trees I saw colors and possibly a person. I moved in that direction. As I cleared the trees and got maybe 15 yards away I got a surprise, and a damn good one! Laying on a big red blanket was a very attractive nude sunbather. I guess she was maybe 25 and hot! I figured she would freak out but she just looked up at me as I approached. I walked right up beside her and she never said a word.
As I stood there quietly she just stared at me and spread her legs wide as I started at her shaved little pussy. I threw off my clothes and joined her on the blanket. I got between her legs and after a tugged on my cock for just a minute I was ready. She just laid there quietly as I fucked her pussy. I came inside her, got up, dressed and left. Neither of us said a word.
Over the next several weeks I came back to that trail damn near daily. On 2 more occasions the car was there. And both times she was in the same spot and i had the same experience. Walk up strip, she would spread her legs and I would fuck her without either of us speaking.
After that I never saw the car or her in the area again. I always wondered how many other guys had the same experience?