The subject is continued on folio 26 recto opposite (D02962). Dumbarton, an isolated rock surmounted by a medieval fortress that had been rebuilt and extended in the late seventeenth and early eighteenth centuries, dominates the surrounding flat landscape of the Clyde estuary; the town of Dumbarton itself is at a little distance across the water to the north, on low-lying terrain.
Turner was preoccupied by the dramatic bulk of the mound-shaped Rock and drew it from many angles as he travelled from Bowling in the east, through the town of Dumbarton and out on to the road north east to Lomond. Other views are on folios 26 verso–27 recto, 27 verso–28 recto, 28 verso, 29 recto, 29 verso–30 recto, 30 verso, 31 recto and verso, 32 recto and verso, 33 recto and verso, 34 recto, and 35 verso (D02963–D02978, D02980).
There is another, of Dumbarton at the very end of the book, on folios 184 verso–185 recto (D03271–D03272; Turner Bequest LVI 182a–183).