Calling anyone out there with engineering, building or gardening knowledge or in fact, anyone who can come up with a solution to this problem

[Zog]

I have a huge hole in my garden. Filling it would be very expensive as it's so deep but I was wondering about the feasibility of building something in or across the hole that I could then turf on top of.

Is this possible? Can anyone think of any other solution, however left field ?

TIA

Any update on what you did Zog?

Roof gardens do not have a huge crater underneath or they’d sink into it. How did you get the hole?