About 15 years ago I worked in support at a large theme park situated just outside a very very posh small village.
One day nothing could connect outside the park - especially an issue when using a third party ticketing provider and credit card processing.
Finally came online mid afternoon and the reason the telecoms engineers gave was that somebody in his multimillion pound house had decided to dig himself a swimming pool and his hired mini digger had hit something repeatedly......that'd be an armoured cable running under his garden then.