Holes caused by meteorite impacts don't disappear after the meteorite is collected. Furthermore, it prevents the construction of base sectors.
Holes from already collected meteorites could disappear after a few days according to the game's clock. Or, it might be possible to build sections and corridors of the base over meteorite holes.
I had to demolish several entire sections of my base just to move one airlock, which couldn't be built because of a hole from a meteorite I had collected a long time ago, but the hole hadn't disappeared.
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