Mammoth Cave National Park - Camping Regulations (U.S. National Park Service)

Rules are found on the bulletin boards.

Pay camping fee at entrance kiosk. Check-in time is 12 noon. Check-out time is 11 am.
Maximum of 8 persons per site. Maximum 14-day stay in calendar year.
Park wheeled vehicles on asphalt pads. All vehicles must fit on asphalt; overflow parking located at Service Center adjacent to campground.
Confine fire to established fire rings. You may pick-up any dead or downed wood or purchase wood from the Campstore located at the Service Center. Store hours vary with season, check bulletin board at kiosk for current hours.
Quiet hours 10 pm to 6 am. Generators are permitted from 6 am to 10 pm as long as they are properly muffled and do not create unreasonable noise.
Keep pets on a leash at all times. Do not leave pets unattended at campsite. Kennels are available at the Mammoth Cave Hotel. Dispose of pet waste in garbage.
Mark your campsite when you leave so others know it is occupied. Articles left unattended on an unpaid campsite for 24 hours may be impounded.
Showers are operated by the park concessionaire and are located at the Service Center. Showers and laundry are open daily March 1 through November 30.
Do not chop, cut, saw, or drive nails into standing trees. Do not use mechanized saws in the park.
Fireworks, firearms, bows, air rifles, blowguns, slingshots, and other weapons capable of destruction are prohibited in the park.
Mini-bikes, mopeds, and motorcycles are only permitted on improved roads.
Rollerskates, rollerblades, skateboards, coasting vehicles, or similar devices are allowed only in the campground.
Water hydrants are for collection of water to be used at campsite. Washing dishes or clothing at water hydrants is prohibited.
To eliminate unpleasant odors and muddy campsites, catch your drain water in buckets and empty into toilets in the restrooms.
Do not dig, trench, or level ground at your campsite.
When food is not being prepared or eaten, it must be stored inside a vehicle to prevent wildlife access to human food. Do not feed or play with wildlife. Wild animals that become dependant on human handouts may lose their ability to forage independently when campers disappear in the “off-season.”
All plants in Mammoth Cave National Park are protected. Collection of any portion of a plant is prohibited.
Obey the 15-mph speed limit and the stop signs in the campgrounds. Watch for children at play.
To avoid poisonous snakes, carry a flashlight or lantern when walking after dark.
Overnight camping is not permitted in parking lots, overlooks, or along roadsides in the park.