Jhaishan Tunnel, Gugang:Jhaishan Tunnel lies southeast of Gugang Lake and the Jhaishan Tunnel passes through the Jhaishan mountain to the sea. Construction began in 1961 and was completed in 1966.The main part of the tunnel was bored through solid granite and the second half is a waterway leading to the open sea. It has a total length of 357m, a width of 11.5m and a ceiling height of 8m. Up to 42 boats can be anchored inside.