This was the park that I used to take my girls to their Venture Crew meetings about 10 years ago. Venture Crew was a part of Boy Scouts, not sure if it still is. It was for young men and women from 14 to 21 years old and focused more on outdoor adventure activities like rock climbing, whitewater rafting etc. Here's a smaller container that you might find right away or if you're not so lucky could be a little challenge.