A small, yellow, plastic container near the solar farm. You don't need to climb over any fences into the solar panel field to access it. For a quicker route to this cache, follow the farm track from the main road straight up the hill (on foot only).
Ybbx nebhaq gur srapr arkg gb gur envyvatf. Ernpu guebhtu gur srapr gb teno gur pnpur uvqvat oruvaq gur srapr cbfg.