Macedonians celebrate the summer solstice at the marker of the Kokino megalithic observatory in Kumanovo June 21, 2013. The 3,800 years old observatory was discovered in 2001 in the north-western town of Kumanovo 70 km (43 miles) north from capital Skopje and is ranked as the fourth oldest observatory in the world after Egypt's Abu Simbel, Britain's Stonehenge and Cambodia's Angkor Wat according to NASA. REUTERS/Ognen Teofilovski (MACEDONIA - Tags: SOCIETY ENVIRONMENT TRAVEL)
REUTERS / Alamy Stock Photo
Image ID: 2D0A21H