Complex sentence: From the post at the edge of the gorge could be seen a narrow track leading downwards which ended on a broad ledge with a deep drop below; whispering could be heard coming from the ledge, so a stone was bowled over.
Split into simpler sentences: From the post at the edge of the gorge could be seen a narrow track leading downwards which ended on a broad ledge with a deep drop below. Whispering could be heard coming from the ledge, so a stone was bowled over.