Geograph - photograph every grid square

Sculpture marking the end of the C2C and W2W long-distance cycle routes. The round, shutter-like aperture in the large black granite monolith, is designed to frame Roker Lighthouse. The mirror-polished finish, reflects the surroundings and has star constellations etched into the surface. The work was inspired by ideas relating to Bede, Europe’s greatest 8thC scholar, who calculated the motion of the Sun and the Moon to set the date of Easter, the method which is still in use today. The rising sun and lighthouse are planned to be in alignment, as seen through the aperture, at 7.30am on Easter Sunday, when it falls on the 4th April. It did so in 2010, at installation, and will again in 2021, 2083 and 2094.
Andrew Small: Link

The final one in the planet-themed waymarkers NZ4058 : Cycle route waymarker by Andrew Small near Sunderland Marina, 'Pluto', by the same artist, is situated nearby.