What information does the height of obstructions provide to pilots?

The height of obstructions is crucial information for pilots because it indicates how high these obstacles are above ground level or sea level. Understanding this height allows pilots to maintain safe altitudes during their flight. Obstructions such as towers, buildings, and terrain features can pose significant risks during takeoff, landing, and while navigating at lower altitudes. By knowing the specific heights of these obstructions, pilots can make informed decisions about their flight paths, ensuring they maintain safe separation from these potential hazards. This information is particularly important in areas with varied terrain or dense urban environments.