The most impressive sight is the relatively modern Byzantine-era Church of SS Lot and Procopius, which is home to more sumptuous surviving mosaics.

BBC: Travelling the slow route to Petra

''Human trafficking is a crime that can be hidden from public sight, but this modern day slavery will not escape the attention of the authorities and we will work tirelessly to set the innocent victims of such crimes free and hold those responsible for such exploitation to account.

BBC: Three Slovakians found guilty of human trafficking