Associate Professor, Dr. Trinh Nang Chung, head of the archaeologist team, said they unearthed a cultural layer at a depth of 0.3 meters below the cave surface.

The only cultural layer is about 0.4 meters thick and has a rather soft texture formed by clay in a dark grey cave, he added.

The archaeologists also uncovered dozens of archaeological relics, mainly pottery and stone items, bones and human teeth. Most of the pottery pieces were decorated with patterns.

This is the first time a metal-age tomb complex has been found in Tuyen Quang province, which is believed to date back to nearly 3,000 years ago.

The province is building a plan to excavate the cave in the coming time.
Source:VNA