This is one of a group of worked-up monochrome mountain studies in this book, all apparently made in North Wales; compare folios 7 verso (D01920) and 48 recto (D01987; Turner Bequest XLV 47). They all seem to be views in the Aberglaslyn Pass south of Beddgelert. The stone bridge shown here is apparently that which figures as the subject of a well-known watercolour study made on the spot by Thomas Girtin (1775–1802), probably in 1798 (British Museum, London).1
Greg Smith, Peter Bower, Anne Lyles and others, Thomas Girtin: The Art of Watercolour, exhibition catalogue, Tate Britain, London 2002, p.154 no.117, reproduced in colour.
Blank; inscribed by a later hand in pencil ‘12½ x 8¾’, the approximate dimensions of this sketchbook book in inches.