Overcast grey sky reflected in Llyn Glangors with trees on lake margins; clear water.

"the noblest oaks in all Wales grew on this rock" Pennant (1778), Carreg-y-Gwalch

#Gwydir Forest and its lakes - an ancient place with a rich environmental history of early botanical explorations, #limnology, metal mining, nature conservation, "acid rain" and afforestation
#Gwydwr #envhist #Wales