One can filter observation fields for a particular value:
https://www.inaturalist.org/observations?field:Altitude%2FDepth%20in%20m:%20(s%20Afr)=20
But can one do it for a range of values? - say 2000-3000m, for instance something like
https://www.inaturalist.org/observations?field:Altitude%2FDepth%20in%20m:%20(s%20Afr)>2000&field:Altitude%2FDepth%20in%20m:%20(s%20Afr)<3000
or would it be
field:Altitude%2FDepth%20in%20m:%20(s%20Afr)>2000&<3000
or perhaps field:Altitude%2FDepth%20in%20m:%20(s%20Afr)=[2000,3000]
or field:Altitude%2FDepth%20in%20m:%20(s%20Afr)>2000<3000
?
I cannot find a combination that works …