The most impressive feature of the Tunnel was its temperature. We had prepared for our expedition by dressing in summer clothing, but the blast of heat that hit us when we entered was unexpected.

With its rapidly accelerated pace, the Central Pacific continued work on the Summit Tunnel into the spring and summer of 1867. Workers broke through in August, just one year after the vertical ...

While not originally built for human travel, the 4,980-foot tunnel is now open for guided walking tours during summer. PART ...

It was renamed the Johnson Tunnel in 1961. It hosted the Summer Nationals and has appeared in movies, WORCESTER ― It's been closed for 21 months, and the future remains uncertain for the Ernest A.