Complex sentence: Trowlock Island is approximately one-third of a mile (535 metres) long with a path running down the middle and houses on either side; beyond the last house is a lightly wooded area with moorings on both the main river and the backwater.
Split into simpler sentences: Trowlock Island is about a third of a mile (535 metres) long with a path down the middle and houses on either side. Beyond the last house is a lightly wooded area with moorings on both the main river and the backwater.