Errigal Mountain, Donegal (Through the looking glass)

Errigal Mountain, the tallest peak of the Derryveagh Mountains, and the tallest peak in County Donegal,

Errigal is also the most southern, steepest, and highest of a mountain chain called the "Seven Sisters" by locals,

It is well known for the pinkish glow of its quartzite in the setting sun.

Done