The Caution Zone was a backyard roller coaster built by Will Pemble in Orinda, California. The coaster was 180 feet long, fifteen feet high and cost US$3500 to construct. It ran until 2015.

Where does will pemble live?

Will Pemble is founder ofThe CoasterDad Project (). He lives in the San Francisco Area with his wife Liz, and his children Ellie and Lyle.

What is the steepest roller coaster in the world 2020?

Ranking of the highest roller coasters worldwide 2020

The U.S. theme park Six Flags Great Adventure had the highest roller coaster worldwide in 2020; its attraction Kingda Ka was 139 meters high.