Police are investigating the theft of a Yellow Thwaites 1 ton Hi-Tip Dumper.
The Dumper is brand new and unregistered and is valued at £18,500.
The theft occurred between 6:30pm on the 15th March and 8:30 on the 16th March, at a compound on Myers Lane, Penrith.
Offenders have forced entry to the compound.
Anyone with any information should contact PC 2317 Eilbeck on 101 or Crimestoppers anonymously on 0800 555 111.