An ancient society near the southern shores of Lake Titicaca in modern-day Bolivia was once one of the continent’s most powerful civilizations. Known as Tiwanaku, the ancient society is widely considered by archaeologists to be one of the earliest examples of civilization in the Andes and a precursor of the Inca empire, but it mysteriously disappeared about a thousand years ago. Now, a team led by scientists at Penn State and in Bolivia have discovered a Tiwanaku temple, shedding new light on what the society looked like in its prime.