From Longman Dictionary of Contemporary Englishvirgin land/forest/soil/snow etcvirgin land/forest/soil/snow etcDNNATURALland etc that is still in its natural state and has not been used or changed by people → virgin
Examples from the Corpus
virgin land/forest/soil/snow etc• Another road runs south, through the oilfields, and is constantly being extended into virgin forest.• Cloud shadows scudded across immeasurable stands of virgin forests.• In low range, it walks with authority across a field covered by a couple of feet of packed virgin snow.• Within an hour, Bucharest is buried under a blanket of virgin snow.• The trees here were all larger and growing much more vigorously than in the virgin forest above.• After an initial few hundred feet across virgin land the railway will join the old trackbed of the long-disused Newbury Railway.• Some scientists believe that it can take up to a thousand years for virgin forest to be truly established.• In response to the beard-shaving incident the Dwarfs chopped down entire virgin forests to spite the Elves. 