Gamera vs. Monster X (1970) (aka GAMERA VS. JIGER)
Another classic GAMERA film which was not featured on MST3K.
Japan prepares for the 1970 World's Fair, however scientists remove a mysterious statue from Wester Island which catches the destructive attention of the reptile Jiger, and only Gamera can set things right.
This original English version may be public domain.
Also known as "Gamera vs. Jiger".
Stu Slaymaker commented
And Ken "Kornjob" Omura is in it!