This cache is set on Hounslow Heath, which in centuries past was considered to be the most dangerous place in the whole country. It was the haunting ground of highwaymen such as Dick Turpin and Claude Duval, who preyed on the passengers of stagecoaches plying between London and Bath / Bristol.
The alternative name describes the location of the cache - it is at the top of a tree, about 25 feet up. It is a free climb , no equipment is required, and there are plenty of hand and footholds.