Part of a series of caches hidden around the edge of the Pentland Hills, most should be hidden at an access point or path to the hills.
This farm is just back from the main A702 road from Edinburgh. This is also the site of the Edinburgh Spartan race which is held every July.
This is a walking route to North Esk reservoir as well.
Be wary that this is a narrow road so take care with your speed :)