I am trying to decide whether it's worth it to invest in this film proposal. Can you help me answer a few questions? If you can't, please say "No I can't". Question: What is the cavern covered in? Movie title: Danger: Diabolik Movie plot: In a nameless European country, Inspector Ginco (Michel Piccoli) takes every precaution to ensure that a $1,000,000 shipment of money reaches a local bank. Despite having decoy armored trucks, the real one containing the money is sidetracked to a marina where a masked career thief, known only as Diabolik (John Phillip Law) steals the whole truck by lifting up by an electric magnet and dropping it into the water, where he dives in and retrieves the money. In a long chase, Diabolik eludes the police by switching cars with his mistress and partner-in-crime, Eva Kant (Marisa Mell) who drives Diabolik back to his hideout, a remote cave in a mountain side which has miles of underground passageways, and their living quarters is a mod of various expensive designed bought with their ill gotten money.Having heard of the latest robbery by the masked thief, the Minister of the Interior (Terry Thomas) arranges for a press conference. But Diabolik and Eva sneak into the conference disgused as reporters where, using their flash bulbs on their camera, they set off some 'exhilarating gas'. When the Minister informs the press of this latest theft and preaching to the reporters that he is not to be made a fool of, the Minister is reduced to just that when the gas reduces everyone in the room to hysterical laughter, while Diabolik and Eva quietly leave unnoticed.Following the press conference, Inspector Ginco attempts to resign. But his boss (Claudio Gora) refuses to accept his resignation. Ginco reluctantly agrees to stay on the police force, and is subsequently put in charge of the current plan to put all criminals behind bars. With tireless precision, Ginco and his men clean up the city. Mobsters are put behind bars, and then executed. When a drug den is raided, the jaded hippies and drug addicted are carted off.Ralph Valmont (Adolfo Celi), the head of a large crime syndicate which is responsible for most of the murders and drug trafficking in the country, learns about the raid on one of his establishments, and makes contact...
A:
a mountain