back in the day, i worked for Energis (#3 wholesale telco in the UK) … we had about 2.2m active subscribers and ran a fibre backbone.

one day the backbone (E1 bidirectional ring iirc) was broken north of london … my boss drove out to find that travellers had entered the field, opened the inspection cover in the ground, stood a pole for their clothes line and filled with cement

very savvy, he didn’t let on that we had about £1m revenue per day close to collapse and convinced them to hang their clothes somewhere else (perhaps a few quid changed hands)