How are WW1 or WW2 era bombs still regularly found in gardens and houses around UK and Europe?

Question

The day after or week after these were dropped 60-100 years ago, did people not think, there’s a bomb over there we should make it safe.

Edit: I singled out the UK because they discovered a bomb from World War Two today in Plymouth. I know the UK is still in Europe.

In: Other

Answer 1

The dropped a crazy amount of bombs over large areas. Many of which did not detonate and ended up buried. It’s like If I flew over your house and dropped a million pennies over it I doubt you’d ever find them all. Maybe most but you’d still be finding pennies years later. There’d be nooks and crannies where you’d never even think to look and overtime things would happen that end up hiding some in various ways.