The previous occupants of my French garden were planning to create a pond but stalled after realising how expensive the pond liner would be. That left me with a huge hole, 5 metres by 3 approximately. Since April I have been filling the hole with all the garden waste that I have created by chopping and hacking, pruning and weeding. As well as virtually filling the hole I have made three huge compost heaps as well so no need to worry about keeping the compost.
I am going to continue to fill this hole right up until the end of autumn I am sure. Now to my plan - I thought about covering the hole with cardboard and a strong polythene cover and leaving it all winter to rot down. I have also got some old rubble, bricks concrete pipes too. Then in spring I had wanted to create a rockery area out of the the space, I have a couple of huge rocks and quite a lot of smaller ones in the garden already. I plan to make a sort of mound (sorry for being vague) out of topsoil and make a little path around it out of stepping stones so I can access the plants. Then plant it up with suitable alpines etc.
My main question is - do you think this will work - or as I fear - the whole mound thing will eventually sink as the debris underneath rots away further? Any ideas or suggestions welcome, I can't spend a fortune on it - much as I would love a designer to come in and do it all - but I am happy to do hard work and also happy for the thing to take time to create.