Thirty-three years ago, on this day, two hikers discovered the Similaun mummy in a glacier on the border between Italy and Austria.

Ötzi, as he is commonly called, was a man between 40 and 50 years old who lived during the Copper Age, approximately 3300-3100 years ago—before Stonehenge or the Egyptian Pyramids.

Since his discovery, extensive research has been conducted (and is still ongoing) on this remarkably well-preserved mummy. Here are a few noteworthy facts about him:

• His last meal is believed to have been speck (dried meat) from an ibex.

• Genetic mapping has shown that he shares ancestry with today’s Corsican and Sardinian populations.

• The Helicobacter pylori found in his gut is a strain primarily found today in South and Central Asian populations.

• Ötzi was lactose intolerant (which may sound surprising, considering he was likely a high-altitude shepherd), predisposed to cardiovascular diseases, and possibly suffered from Lyme disease.

• He had bad teeth, too: this was a condition common among ancient populations that consumed a diet rich in cereals.

• He died a violent death, most likely caused by an arrow wound.

• Various artifacts were found with him, including an axe made from copper sourced from southern Tuscany.

Ötzi’s mummy is now housed at Bolzano's South Tyrol Museum of Archaeology.