Most Virginia State Parks already host several caches, but Mason Neck SP in Northern Virginia only has one so far, and that one was set out by the park staff. The park does have several letterboxes, but the park is willing to accept about 5 new geocaches if anyone is intersted. You just need to get an approved geocaching form from the park to make sure you aren't setting up on top of a letterbox or leading people to the last known rare and endangered whatchamacallit. Contact the park at MasonNeck@dcr.virginia.gov if you are interested.