My neighborhood (Bangkok)

Hi Everyone! I've been in country for 2 months and have not yet met any real adventurous travel buddies. I've heard about elephant tours and zip-lines through the jungle that sound like fun. Kayaking through caves and less traveled by waterways would also be my cup of tea (or preferably, dark beer). I am right above the Cambodian border in Sekeow Province. Anybody in my neighborhood?