What is a common source of lift for gliders near mountainous areas?

Ridge lift is a common source of lift for gliders near mountainous areas due to the interaction of wind with the terrain. When wind flows over a mountain ridge, it is deflected upward, creating an area of rising air along the windward side of the ridge. This updraft allows gliders to gain altitude by flying into this rising air.

Gliders are particularly well-suited to exploit this type of lift because they can maintain a slow and controlled flight speed while taking advantage of the upward movements. Pilots can circle in the rising air to stay aloft for extended periods, making ridge lift a valuable resource when soaring in mountainous regions.

While thermal lift, wave lift, and mechanical lift can also provide opportunities for gaining altitude, ridge lift is specifically associated with the direct physical interaction of wind with the topographical features of mountains, making it especially prevalent and accessible in those areas.