Three miles north, and as much from Skegness and the sea, is Burgh, a market-town, whose name drew my attention. I found it to be a Roman _castrum_ to guard the sea-coasts, probably against the Saxon rovers: it is a piece of very high ground, partly natural, partly raised by Roman labour, overlooking the wide extended marshes, perhaps in those times covered with salt water, at least in spring tides. There are two artificial _tumuli_, one very high, called Cock-hill. In St. Mary’s church-yard, now demolished, Roman coins have been found. I saw a very fair and large Antoninus Pius in brass, cos. +iiii+. in possession of Tho. Linny. In the yards and gardens about the town they frequently dig up bodies. St. Peter’s church is large and good. There appear no Roman ways, _vallum_, or ditch, to inclose the town, which is a sort of knoll, or rising ground. I was told of a Roman aqueduct of earth, found at Spilsby. In Halton church hard by is this inscription on a flat stone. + *SIRE WATER BER GIST ICY DE SA ALME DEUS EIT MERCI*. Another, a cross-legged knight: on his shield a lion rampant. At Hagnaby, a religious house founded by Agnes de Orreby. Well, by Ralf de Hauvile. Near Well, on a chalky heath, are three curious Celtic barrows contiguous and joined one into another, composed of chalk: the chalk in Lincolnshire by Alford answers to that in Norfolk. Tateshall collegiate church founded by Ralf Cromwell. Many _tumuli_ hereabouts, as at Hagnaby and other places, but none so remarkable a curiosity as those by the broad road upon the descent of the high country, overlooking the vast level towards Boston. At Revesby, by the seat of Joseph Banks, esq; there is an oval inclosed with a broad ditch: the longest diameter, which is somewhat above 300 foot, is precisely east and west; the other a little above 100: the entrance to it is on the middle of the south side: within, at each end of the length, is a large _tumulus_ 100 foot in diameter: they are equal in shape and similar positure, a large vacuum of 100 foot lying between: it is very regularly formed: the length of the oval ditch that incloses the two _tumuli_ is equal to thrice the breadth: the _tumuli_ are large and high: that rising on the north side, without the ditch, is of an odd figure, but similar. It seems to have been a place of sepulture; perhaps two British kings were there buried; and the height on the north side was the place whereon they sacrificed horses, or the like, to the _manes_ of the deceased. Or is it a place of religious worship among the old Britons? and the two hills may possibly be the temples of the Sun and Moon. I am inclined to think it ancient, because of the measure: the breadth is equal to 100 Celtic feet, as I call them; the length to 300. [Sidenote: +Banovallum.+] [Sidenote: TAB. LXXXIX.]