The north portal of the tunnel is still visible, but fenced off.
The tunnel's north portal was severely damaged in a 1925 landslide.
Exceptional masonry carvings can be seen in the north portal.
The north portal is located just to the south of the Sacramento Street intersection.
Inspectors found heavy damage to the tunnel walls under the north portal.
The ones on the north portal, showing Biblical scenes, were finished in 1950.
Yet she has made straight for the north portal," suggested another.
The main (north) portal is sculpted and dates back to the first half of 12th century.
Today only the porch of the north portal remains.
At the north portal, overlooking the river, a safety railing has been built across the tunnel.
