In ground trampoline

[softail1]

We had sunk a trampoline in ground about 5 years ago. It held up really well. The kids are grown and don't really use it anymore. Just wondering if anyone had any ideas on what to do with a 15' hole =) It costs a lot of money to have dirt brought in to fill it. Who would have guessed? Just wondering if any of you have been there and done that, and have any suggestions. Thanks.

Post on your local Facebook and offer to take leftovers from building work? We're planning to dig out a bit of front garden to make a parking space so will have spare earth, we can't be the only ones.
Post lockdown obvs.

Thanks! That's a good idea.