Complex sentence: He invented the Caballerial, around 1980, in the 10 ft. keyhole pool at Winchester Skatepark in Campbell, California, as well as the frontside rock n' roll slide (now more commonly referred to as a "frontside board slide").
Split into simpler sentences: He invented the Caballerial, around 1980, in the 10 ft. keyhole pool at Winchester Skatepark in Campbell, California. As well as the frontside rock n' roll slide (now more commonly referred to as a "frontside board slide").