Person peers down 80 foot drop into underground lake (IMAGE)
Caption
Underwater photographer Shireen Rahimi peers down the 80 foot drop to Lago dell'Orsa, one of the biofilm sampling locations.
Credit
Dani Buchheister/Penn State
Usage Restrictions
Credit must be given to the creator. Only noncommercial uses of the work are permitted. No derivatives or adaptations of the work are permitted.
License
CC BY-NC-ND