Arthur's Seat, an extinct volcano and the highest point in Edinburgh, is at the centre of the park, with the cliffs of Salisbury Crags to the west. There are three lochs; St Margaret's Loch, Dunsapie Loch, and Duddingston Loch. The ruined St Anthony's Chapel stands above St Margaret's Loch. Queen's Drive is the main route through the Park, and is partly closed on Sundays to motor vehicles. St Margaret's Well and St Anthony's Well are both natural springs within the park. Holyrood Park is located to the south-east of the Old Town, at the edge of the city centre. Abbeyhill is to the north, and Duddingston village to the east. The University of Edinburgh's Pollock Halls of Residence are to the south-west, and Dumbiedykes is to the west.