Swart, adj. Black Looking
Houe, n. A hill of considerable size. A tumulus.
Near Swarthoue on Dunsley High Moor, which was no doubt, a Druid’s station, are several ancient stone-pillars, only about three feet high. Two of them stand one hundred west from this houe, and west from one another; a small houe also stands a few yards west from them. At a distance of one hundred and ten yards north by east of these, two more similar pillars, stand at nearly the same distance from, and also in the same direction from, each other. These four old erect stones forming a long square, may possibly be only parts of other figures, such as triangles or circles, or a long avenue. In setting these, reference seems to have be made to the cardinal points, and perhaps, also to that conspicuous tumulus, Swarthoue, with which they form a nearly right angled triangle. The circular margin of that houe was set round with low curb-stones. It is about twenty yards round at the base, and from ten to twelve feet high.
Descriptions, Geological, Topographical and Antiquarian in Eastern Yorkshire
Robert Knox. 1855
Samuel Anderson excavated the barrow in 1852. On the outlying stones he notes –
There has been a line of large stones pointing from one barrow to the other, only two of which remain to remind the Antiquary that the ‘Modern Goths’ have been pilfering Antiquity of its relics…I may mention that there are many markings on the two stones between the barrows numbered 1 and 2 but whether the work of man or time cannot now be determined altho’ some of the marks correspond with these on a stone found in the barrow which has evidently been done by the parties forming it.
Minutes of opening Ancient British Tumuli in the neighbourhood of Whitby
Samuel anderson 1852-1853
The Smell of Water 
over the years i have looked a couple of times for the northern pair of ‘druid stones’ – but found nothing.
Looks like they may have disappeared between Knox’s survey and Anderson’s excavation. There is a large stone dump roughly where they were sited, quite a bit of worked & unworked stone presumably from the building of the telecoms sites & the forestry. There are a couple of decent ditch & banks just north of the site that don’t appear in the descriptions.