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Hafod, Llanidloes

Hafod, Llanidloes

Draughtsman: Dawson, Robert

Medium: Pen and ink on paper

Date: 1820

Shelfmark: OSD 311

Item number: 25

Length: 49

Width: 31

Genre: Map

Map scale ratio: 2'' : Mile (1 : 31680)

This plan of the Ystwyth valley in the Cambrian Mountains is formally titled. The scale of the drawing is noted and the area of the land recorded as 183.0453 square miles. Archaeological sites are named in gothic script. Colour washes depicting relief are combined with numerical annotations ('spot heights'), in red and black ink, indicating the height of the hills. The altitudes in red ink are trigonometrically ascertained; those in black are estimated.

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