A glen is a valley, typically one that is long and bounded by gently sloped concave sides, unlike a ravine, which is deep and bounded by steep slopes.
Glendun, one of the Glens of Antrim in Northern Ireland
Raven's Craig Glen located in Dalry, North Ayrshire, Scotland
Robert's Glen in Macon, Georgia circa 1877
Glenorchy, in Otago, New Zealand
Ben A'an is a hill in the Trossachs in Scotland. The pointed peak of its west top resembles a small mountain.
The hill of Ben A'an in the Scottish Highlands
The hill in a James Valentine picture