About a mile north of the church the granite hills make their appearance, and run across the parish in a curved line. The only variety which this rock presents are coarse and fine grained masses, and a kind of fluor, near Carraton Hill, containing hornblende. Immediately south of the granite, on the side of a barren moor, masses of compact and quartz ore felspar rock protrude, indicating the same formation as at Trewist in Alternun. Near the church hornblende slate prevails, which is said to contain veins of actynolite and asbestos. A little further south, on the ridge of a barren down, massive hornblende rock projects in tiers; and loose blocks of the same stone lie scattered over the side of the hill, and in the adjacent valley. The whole of the southern part of the parish is composed of varieties of this same rock, several of which are well displayed in the vicinity of Rosecradock. [26] Probably this place took its name not from a gate painted red being there placed, as is generally imagined, but from its being situated just above Fowey river; Rhie-gat signifies River’s course. The Fowey river at this place is not above half a mile from the source of Looe river. [27] The following account of these stones is copied from Mr. Polwhele’s Cornwall, vol. ii. p. 195. “In the parish of St. Clere, about 200 paces to the eastward of Redgate, are two monumental stones which seem parts of two different crosses. They have no such relation to each other as to warrant the conclusion that they ever contributed to form one monument. One is inscribed; the other, without an inscription, called ‘the other half stone,’ seems to have been the shaft of a cross, and originally stood upright, but has latterly been thrown down, from an idle curiosity to ascertain whether any concealed treasures were beneath its base. On one of its sides are some ornamental asterisks, but no letters of any kind. Its present length is about eight feet; yet it seems to have been once longer, as the upper part is broken, and displays part of a mortice. The inscribed stone, nearly square, appears to have been a plinth of a monumental cross, having the words ‘Doniert rogavit pro anima’ inscribed upon it, in similar characters to those used about the ninth century. Doniert is supposed to mean Dungerth, who was king of Cornwall, and accidentally drowned about the year 872. Of the meaning and intention of this monument, see Borlase, pp. 361, 362.”