sion for water, it could not have been a fortress. In Sky, as in every other place, there is an ambition of exalting whatever has survived memory, to some important use, and referring it to very remote ages. I am inclined to suspect, that in lawless times, when the inhabitants of every mountain stole the cattle of their neighbour, these inclosures were used to secure the herds and flocks in the night. When they were driven within the wall, they might be easily watched, and defended as long as could be needful; for the robbers durst not wait till the injured clan should find them in the morning.
The interior inclosures, if the whole building were once a house, were the chambers of the chief inhabitants. If it was a place of security for cattle, they were probably the shelters of the keepers.
From the Dun we were conducted to another place of security, a cave carried agreat
