Tucked away in the Talamanca mountains, a tiny, semi-translucent frog has lurked out of the sites of scientists from more than a century of field work.
A 24-year-old herpetologist from Michigan came to Costa Rica to do research at Cloudbridge Nature Reserve, and found several amphibians never before seen in the area.
Costa Rica will offer free entry to national parks on August 24 for citizens, residents and international visitors. Reservations are still required at many popular parks.