(St. Clair, 1890) in Sarnis, Lambton County, ON. Front St. S. (curves E.) 1.5 miles (2.4km) from jct with PH402 exit 1,S. (right) on Christina St. 0.5 miles (0.6km), E. on Tecumseh St. 0.1 miles & view the tunnel to the S. (N42 57.509 W82 24.612) Photos by Jack Schmidt 6-21-07.