The southern part of Mainland, from Laxfirth Voe to Fitful Head a series of dark schists and slates, is found with subordinate limestones.
The metamorphic rocks of the rest of Mainland are principally coarse gneisses, micaceous and chloritic schists, quartzites, &c.; in these rocks at Tingwall and Wiesdale considerable beds of limestone occur, which may be followed across the island in a northerly direction to Yell Sound, and to Dales Voe in Delting.
Gabbro occurs in the peninsula of Fethland; diorite in Northmavine between Rinas Voe and Mavis Grind; and epidote-syenite in Dunrossness.
According to Dr Jakob Jakobsen, the name means the voe (waa) of the skollas, or booths, occupied by the men who came to attend the meeting of the ling, or open-air law court, which assembled in former days on an island in the Loch of Tingwall (hence its name), about 3 m.
Many large and fierce bears roam in the Valley of Voe, and when they can catch any of us they eat us up; but as they cannot see us, we seldom get caught.
"The Valley of Voe is certainly a charming place," resumed the Wizard; "but we cannot be contented in any other land than our own, for long."
Fruits and flowers grew plentifully all about, and there were many of the delicious damas that the people of Voe were so fond of.
You are strangers in the Valley of Voe, and do not seem to know our ways; so I will try to save you.
It is a secret the bears do not know, and we people of Voe usually walk upon the water when we travel, and so escape our enemies.
Looking through this opening they could see the Valley of Voe lying far below them, the cottages seeming like toy houses from that distance.
The opening in the mountain was on the side opposite to the Valley of Voe, and our travellers looked out upon a strange scene.