The table-land of the southern uplands, like that of the Highlands, is of immense antiquity.
All the mountain-groups now referred to are massed along the northern borders of the southern uplands.
The rocks that enter into the formation of this portion of the southern uplands have much the same character throughout.
Into this estuary, rivers and streams carry the spoil of the southern uplands, and — 94 — strew its bed with sand and mud.
In the central valley between the base of the Highlands and the southern uplands lay "Lake Caledonia."
These southern uplands descend to the valley of the Sutlej by an abrupt terrace, which marks the former bed of the river.