Worst case scenarios: neighbor uses logged off hillside for body dump starting with yours, pond breeds new hybrid mosquito that gives you west Nile virus and Ebola, neighbor strikes oil on the hillside, moves to Hawaii, wife leaves you for the other guy because she misses the hillside, red area is already a body dump, you go to prison for murder, you and the neighbor become best friends but his wife laughs like a pterodactyl so for the rest of your life you eat 1 or 2 meals a week with a woman who laughs like a pterodactyl.
You win!
