Experts in China have entered 72 petroglyphs, an ancient rock art dating as far back as the Paleolithic Age, into a digital image database after two years of fieldwork, the Xinhua News Agency reported on Monday.
LANZHOU, June 12 (Xinhua) Northwest China s Gansu Province has set up a digital image database for rare and precious rock paintings at its 72 cultural relic sites, local authorities said.
LANZHOU, June 12 (Xinhua) Northwest China Gansu Province has set up a digital image database for rare and precious rock paintings at its 72 cultural relic si