The Park Guidelines page has been revised. Information should be a lot easier to locate now.
Also, please be sure before placing a cache that you do seek the appropriate permissions from the park. I spent some time on the phone with DNR the other day and they’re going to be making some policy changes (edit: which should make it easier, not harder, to get approval). We need to work together to be sure geocaching continues to be allowed on park land in the state of Maryland.
If you have any questions, please send me a 
Thanks!
