65.Guiding Lights Part One

The entrance to Johnshaven harbour has rocks on either side, so there's little room for error as boats come in. 

In order to guide boats in through the narrow channel, there are two lights.  This red one is at the harbour, and there's a green one directly above it on a higher road.  To travel safely through the channel, boats must line up the red and green lights.  Simple but effective.