"A Fall of Moondust"
(Arthur C. Clarke)
Set in the 21st century. The moon has a large 'sea' of dust
so fine, that objects disappear in it without a trace. Tours are run
on the surface, using a 'moonbus'.
But a lunarquake opens up a
giant cavity under the 'bus' and buries 22 people in 15 meters of sand...
This is the story of the dramatic rescue mission.