North Dartmoor is renowned for its military live firing ranges with several Observation Posts (OPs) set across the landscape for the purpose of observing and controlling military manoeuvres in the vicinity. A small outcrop can be located by one of these, OP 7, to the south-east of East Mill Tor on what is known as 'Little Hill', a name used by Eric Hemery (1983) in High Dartmoor (p.871) who describes the area as "a hillock above the left bank" of the East Okement River.
It is a tiny outcrop when compared to neighbouring Oke and East Mill Tors, however, the OP which sits beside it gives the rock prominence when viewed from afar and is easily reached from Deep Ford to the east. Historic England provides an insight into the OP; "Observation Post 7 is a stone- and earth- covered concrete splinter-proof shelter, also known as a bunkhouse, built up on a small granite outcrop near to the west of the East Okement River and 110m west of the military ring road."
The website also describes it as "one of the best surviving of the early-C20 splinter-proof shelters on the range, with a relatively low level of erosion and few significant alterations" which is indeed the case, giving the outcrop some credibility as a suitable location for the military to practice.