Pliny Miles, Norðurfari; or, Rambles in Iceland
“ In a valley, some twenty miles to the northwest, was a beautiful cluster of lakes, the water often of a deep, green color as they reflected the meadows on their banks. Now and then in the landscape would appear the Iceland “forests,” like patches of shrubbery of a dark green hue. Some hills and old lava districts were covered with heath, now in full bloom, and clothing the land in a robe of purple. The surface of Hekla itself, and the ground on every side, some distance from the base, was one black mass of lava. ”
