Past the museum, Monckton St leads to the Sendall Tunnel, a narrow 340-foot passageway that burrows through the hill to reach Bruce St and the rest of St George’s. It was built by former governor Sir Walter Sendall as an alternative to the steep, slippery (and then unpaved) Young St, which had been the principal route between the Carenage and St George’s proper. Cars and pedestrians use it today; when walking, stick to the west side of the tunnel.