Marsden Rock is accessible on foot during low tide. In 1803 a flight of steps was constructed up the side but in 1911 a large section of the rock collapsed into the sea leaving it as an arch. Continued tidal erosion caused the arch itself to collapse in 1996, splitting the rock into two separate stacks, and the following year the smaller stack was declared unsafe and demolished. Today Marsden Rock is owned by the National Trust.