Grey Mares Knowe
| Grey Mares Knowe | |||
| Northumberland | |||
|---|---|---|---|
 The summit of Grey Mares Knowe | |||
| Range: | Cheviot Hills | ||
| Summit: | 1,693 feet NT666003 55°17’40"N, 2°31’30"W | ||
Grey Mares Knowe is a summit on the Kielderhead Moor, amongst the Cheviot Hills, in Northumberland. The summit cannot be called an independent hill in itself but is in the form of a spur from Limestone Knowe, whose main summit stands to the north.
The southern slope of the hill drops off sharply to the Scaup Burn and is afforested.