What feature is known for collecting and concentrating wind extremely?

Canyons are known for collecting and concentrating wind due to their unique topographical features. As wind flows through a canyon, the narrow and steep sides can funnel the air, resulting in an increase in wind speed. This phenomenon occurs because the confined space forces the wind to move faster as it passes through, much like how water accelerates when flowing through a narrower section of a stream.

This characteristic of canyons plays a significant role in wildfire behavior by potentially carrying embers and flames to new areas, thus increasing the fire's rate of spread. In contrast, ridges and saddles may influence wind patterns, but they do not concentrate wind in the same way canyons do, while wetlands tend to inhibit wind flow due to their moist and dense vegetation. Therefore, the distinctive structure of canyons makes them key features in understanding how wind can affect wildfire dynamics.