My monkey bar set has been installed for a year, and upon inspection, covering the powder-coated base has resulted in zero damage to the base. While I would suggest a level surface, ...

Jungle gyms and monkey bars are about 100 years old — patented in 1923 and 1924 by U.S. lawyer Sebastian "Ted" Hinton. Even Hinton, in his first patent , noted the link to primates.