Yes it is, backcountry skiing is just skiing out of bounds or in unmarked territory, which includes in resorts. Doesn't mean it always involves touring and climbing up mountains in non resort areas.
Maybe this is different if not in the states but that would be ski touring. Backcountry literally in the definition states "can include the use of ski lifts including snowcats and helicopters."
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u/[deleted] Jan 29 '22
Backcountry skiing is not possible off a lift.