"Unreachable areas" refers to places or locations that are difficult or impossible to access or reach, typically due to physical barriers, distance, or inaccessibility. Full definition
The totems can also stack on top of each other giving the player access to some otherwise unreachable areas in the level. (cogconnected.com)
As tradition, Link is only armed with a simple sword and shield at the beginning of the game, but with progression through the game's signature dungeons, our hero's arsenal will expand, allowing him to reach previously unreachable areas by clearing obstacles in his path. (glitchcat.com)
Flex up even the most unreachable areas of your body with the Baddha Konasana. (rishikulyogshala.org)