Quick Answer
Situations where maps are more reliable than GPS include wilderness areas with poor satellite reception, underwater or in caves, and areas with tall buildings or dense foliage that can obstruct GPS signals. Maps can also be more reliable when electronic devices are running low on battery or have been damaged. In these situations, a physical map can provide critical navigation information.
Lack of Satellite Reception
When in wilderness areas, maps are a more reliable option due to the lack of satellite reception. In areas with dense forests or mountainous terrain, GPS signals can be weak or non-existent. This is because GPS signals have to travel through multiple layers of the atmosphere, and any obstacle in their path can weaken or block them. A physical map, on the other hand, can provide a clear visual representation of the area, allowing you to navigate even in areas with poor satellite reception.
Underwater or Caves
When diving underwater or exploring caves, GPS is not an option. GPS signals cannot travel through water or solid objects, making physical maps or compasses a more reliable option. In these situations, a map can help you navigate and find your way back to the surface or exit point.
Tall Buildings or Dense Foliage
In urban areas with tall buildings or dense foliage, GPS signals can be weak or obstructed. This is due to the physical barriers between the GPS satellite and your device. A physical map can provide a clear visual representation of the area, allowing you to navigate even in areas with poor satellite reception.
Find more answers
Browse the full Q&A library by topic, or jump back to the topic this question belongs to.