Waste collector Tyrone Covell said he couldn't believe his eyes when he went to collect a skip a customer had ordered and found a caravan in it.
The environmental services company that rented the skip out says it had given the customer a list of banned items when it was hired but it if failed to mention unwanted caravans.
Tyrone said he couldn't stop laughing when he saw that the customer had managed to heave the caravan onto the skip, ready for collection.
After telling the customer he could not collect the item, Mr Covell phoned his head office GD Environmental Services in Newport, to tell them what had happened.
Melissa Hodges of GD Environmental Services said there was no other rubbish in the skip and it appeared it was hired just for the caravan.