Located next to the Anuy River, about 150 km south of Barnaul (Russia), the Denisova Cave is a popular tourist attraction, such is its paleontological importance. Over the years a number of remains have been found there, including some of extinct animals such as the woolly mammoth. In total evidence of 66 different types of mammals have been discovered inside, and 50 bird species.
The most exciting discovery was the remains of the Denisovans, a species of early humans that dated back as early as 600,000 years ago and were different to both Neanderthals and modern man.
In 2000 a tooth from a young adult was found in the cave and in 2008, when the bracelet was found, archaeologists discovered the finger bone of a juvenile Denisovan hominin, whom they dubbed the 'X woman'. Further examination of the site found other artifacts dating as far back as 125,000 years.
The institute's deputy director Mikhail Shunkov suggested that the find indicates the Denisovans - though now extinct - were more advanced than Homo sapiens and Neanderthals.
Outstanding artifact and article found here.