The swamp was a location the gang went to for a picnic.
History[]
Scooby-Doo! Mystery Cases[]
The gang's picnic was interrupted by a menacing Swamp Creature, but decided to start a food fight instead of running away.
They ended up becoming victorious after a last minute saving one another and the creature was revealed to be Captain Karnby, a restaurant owner who was trying to buy the swamps land for his business.