Complex sentence: The stream crosses the Roman road, Ermine Street, before going under the A10 and Cock Lane until emerging under the bridge on the High Road, also called Spital Brook, marking the traditional boundary between the two parishes of Hoddesdon and Broxbourne.
Split into simpler sentences: The stream crosses the Roman road, Ermine Street, before going under the A10 and Cock Lane. The brook passes through its namesake area, Spital Brook and marks the traditional boundary between the two parishes of Hoddesdon and Broxbourne.