Chiashan Air Force Base

Chiashan Air Force Base (Chinese: 佳山基地) is a military airport operated by the Republic of China Air Force in Hualien County, Taiwan.

Hualien Airport operates within a 28-acre civilian section of the base.

It is one of the most important defense installations on Taiwan as it houses the military's most survivable aerial counter-attack forces.

[2] Construction of the main underground section of the base spanned from 1985 to 1993 and cost more than 27 billion NTD to build.

[3] The underground complex has ten blast doors which exit to multiple runways.