Complex sentence: The area stretches for 30 km along the east bank of the Nile, was first excavated by Guy Brunton and Gertrude Caton-Thompson between 1922 and 1931.
Split into simpler sentences: The area stretches for 30 km along the east bank of the Nile. It was first excavated by Guy Brunton and Gertrude Caton-Thompson between 1922 and 1931.