The city of Meroë laid undiscovered for two millennia before British archaeologist John Garstang excavated it in the early 20th century. Garstang took the radical decision to document his discoveries with photography – and immortalised an ancient world. “Meroë: Africa’s Forgotten Empire” is being shown until 14 September at Garstang Museum of Archaeology, Liverpool. Here: A group visiting the excavations at Meroë, including (from left) Midwinter Bey, director of Sudan Railways; Lord Kitchener; General Sir Francis Reginald Wingate, Sirdar of the Egyptian Army; Professor Archibald Sayce; John Garstang; and Lady Catherine Wingate, 1911. (Photo by Garstang Museum of Archaeology)

A Syrian boy is comforted as he cries next to the body of a relative who died in a reported airstrike on April 27, 2016 in the rebel-held neighbourhood of al-Soukour in the northern city of Aleppo. The Syrian army was preparing an offensive to retake the whole of Aleppo, as fighting in the divided second city killed 38 civilians in a new blow for a tattered truce. Nearly 200 people have been killed in Aleppo in the past week as rebels have pounded government-held neighbourhoods with rocket and artillery fire and the regime has hit rebel areas with air raids. (Photo by Karam Al-Masri/AFP Photo)

A worker spreads paddy crop for drying in a rice mill complex on the outskirts of Ahmedabad February 3, 2011. (Photo by Amit Dave/Reuters)

A woman carrying a basket of papayas while walking through a vegetable market in Bangkok, Thailand November 11, 2011. (Photo by Kerek Wongsa/Reuters)

A tourist poses for a picture with the Sphinx at the Pyramids of Giza in Cairo, Egypt, on October 19, 2011. (Reuters/Jamal Saidi)

A model walks the runway during the John Galliano Ready to Wear Autumn/Winter 2011/2012 show during Paris Fashion Week on March 6, 2011 in Paris, France. (Photo by Pascal Le Segretain/Getty Images). PARIS, FRANCE – MARCH 06

Vitali Klitschko of Ukraine poses in front of Odlanier Solis of Cuba during the weigh in at Sport Karstadt on March 18, 2011 in Cologne, Germany. The WBC World Championship Heavyweight fight between Vitali Klitschko of Ukraine and Odlanier Solis of Cuba will be held on 19 March 2011.

The new 2011 Volkswagen Passant Variant (L) and new Golf Cabrio are lifted into one of two storage towers at the Autostadt customer reception center at the Volkswagen factory on the day of the German automaker's annual press conference on March 10, 2011 in Wolfsburg, Germany. (Photo by Sean Gallup/Getty Images)