Arkansas State Parks Trip Ideas

It was all treat, no trick this Halloween for Steven McCool of Fayetteville, Ark., at Crater of Diamonds State Park. The 34-year-old found the third-largest diamond of the year. He found a 4.49-carat yellow diamond.

We love singing the praises of Devil's Den State Park but don't just take our word for it. Check out our visitor gallery and tag Devil's Den State Park or use #ARstateparks to share your pics and videos.

A couple spotted a large brown gem at Crater Diamonds State Park that turned out to be a 2.78-carat diamond.

A 25 year old woman thought she had only picked up a piece of glass at Crater of Diamonds State park, but in reality, she found out she had discovered a 2.65-carat brown diamond.

Arkansas State Parks has been involved in mountain biking since the 1980s and still have a variety of rides, competitions, trails and bike shops.