I always had an idea that Como was a vast basin of water, like Tahoe, shut in by great mountains.

It is formed of a vast semi-circular basin over 16 km wide and 20 km from its entrance to the opposite shore.

And these waters falling from the surrounding heights have taken possession of this vast basin.

Huge cliffs, vast basins and plateaus, a lake and even rivers have been found.

Half a century ago, this mammoth city was China's wartime capital, a vast grassy basin whose surrounding mountains could keep the enemy out.

At the foot of the cliffs only a few broken ridges protruded from the sea of sandy sediments that had filled the vast basin.

Here in this vast equatorial basin it was still warm enough to support life.

By heading directly west he might last long enough to find that road, yet the water gourd was dry and the vast sun-baked basin before him offered no promise.

Far and away to the westward the distant mountain ranges lost themselves in a purple mist, giving the impression of a vast basin that lay between.

The French were determined to hold the St. Lawrence country and to extend their power over the vast basin of the Mississippi.