A faint message on a portion of the remaining plaster. I think the first word might have been

Weather Log

A faint message on a portion of the remaining plaster. I think the first word might have been "clear" followed by the date, the only portion of which I can make out is the year: 1813.
Credit
Toby J
Taken
16/04/2019
Camera
Nikon D750
ISO
2200
Shutter
130 second
Aperture
ƒ/8
Focal Length
30mm
Lens
Tamron SP 15-30 f/2.8 Di VC USD
License
Copyrighted
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Black Scar House