Over 140 new geoglyphs discovered at Nazca


A research team led by Professor Masato Sakai (Cultural anthropology, Andean archeology) at Yamagata University discovered 142 new geoglyphs, which depict people, animals and other beings, on the Nasca Pampa and surrounding area in Peru, South America.

Situated mainly in the west of the Nasca Pampa, these new geoglyphs were identified through fieldwork and analyzing high-resolution 3D data, among other activities conducted up to 2018. The biomorphic geoglyphs are thought to date back to at least 100 BC to AD 300.

Additionally, in a feasibility study carried out from 2018 to 2019 together with IBM Japan, the university discovered one new geoglyph by developing an AI model on the AI server IBM Power System AC922 configured with the deep learning platform IBM Watson Machine Learning Community Edition (formerly known as IBM PowerAI) . This study explored the feasibility of AI’s potential to discover new lines, and introduced the capability to process large volumes of data with AI, including high-resolution aerial photos, at high speeds. This represented the first glyph at the site discovered by an AI.

Professor Sakai and other researchers at Yamagata University have engaged in initiatives since 2004 to study the Nasca Lines, a UNESCO World Heritage Site. In addition to successfully identifying many geoglyphs, Professor Sakai and others have carried out activities to preserve this heritage site.

However, there is still much work needed to be done in surveying the distribution of these geoglyphs. In addition, the expansion of urban areas has brought damage to the lines, drawing attention to the protection of the Nasca Lines as a social issue.