This is the bonus cache for the Culver City Short Tour Adventure Lab. Parking at The Culver Steps parking garage is a good place to park and it is free for 90 minutes, I believe. You should have plenty of time to complete the lab and the bonus during free parking unless you choose to visit some restaurants in the area.
You must complete the Adventure Lab in order to get the information to insert into geochecker.
You can validate your puzzle solution with certitude.