Knowth hoar frost melting in midwinter sunshine

A rare hoar frost (the first in the Boyne Valley since 2010) coated the trees and grass at Brú na Bóinne on 16th December 2022. Here is a drone image of Knowth and some of its satellite mounds. The rising sun had begun to melt some of the hoar frost, creating an interesting pattern of green and white on the mounds.