'Shade' in the Bible

And they never said, Where is the Lord, who took us up out of the land of Egypt; who was our guide through the waste of sand, through an unplanted land full of deep holes, through a dry land of deep shade, which no one went through and where no man was living?

Those who went in flight from the fear are waiting under the shade of Heshbon: for a fire has gone out from Heshbon and a flame from the house of Sihon, burning up the pride of Moab and the crown of the head of the violent ones.