An emergency escape exit on a US Air force Hercules plane. Leading down parapets and battlements and watch

parapets and battlements and watch tower of a fort on a desert mountaintop

Iranian tourists visit the four tombs belonging to Achaemenid kings carved from the rock face at the archeological site of Naqsh-e Rustam also known as the Necropolis

A gilded bronze statue by the Potomac River featuring Mars on a horse

A woman with a baby and child crosses a dry lake bed in drought

The detail of an echidna's spine quills

An emergency escape exit on a US Air force Hercules plane. Leading down parapets and battlements and watchAn emergency escape exit on a US Air force Hercules plane. Southern Ocean, between New Zealand and Antarctica.