The hole is an intentional hole, specifically dug for the trampoline ::no emoticon could possibly convey how high my eyebrows have risen up my forehead emoticon:: LordD decided it would be less intrusive if it were in a hole so he got busy with the digger. The hole is over 10ft in diameter and 2 feet deep.
To be fair, it looks better but it has been far harder work that he anticipated
. And he still has to level the rest of the garden so we can lay the extra lawn.