I came across this picture a few weeks ago. I never posted it because I couldn’t substantiate where it came from or when it was taken, but this is 100% the Playboy Mansion. They’re really digging up the grounds it would appear.
https://twitter.com/kate_awakening/status/1247573022900244483
Playboy mansion does have extensive underground tunnels and quarters
https://twitter.com/Inevitable_ET/status/1247582421014511620
I can attest to this.
https://twitter.com/jennajameson/status/1247587151052566528