Unveiling the Colossus Big Bertha, the Goliath of Artillery

Big Bertha is the worlds largest tunnel boring machine at a length of 300 feet and a height of five stories. Big Bertha weighs 7,000 tons. The original Big Bertha driver came along in 1991, at a time when most golfers were still using persimmon drivers. It clocked in at a whopping 190cc. In 1994, oversized Big Bertha irons joined the party and a year after that the Great Big Bertha driver was released, in all of its 253cc glory. "[The original] Bertha clearly still is the biggest drum ever built using leather heads," Kirksey said. "I don't think there's any doubt about ... The Big Bertha was a 42cm howitzer, model L/14 designed in the aftermath of the Russo-Japanese War of 1904 on behalf of the German Army. German super-heavy siege howitzer M-Gerät 'Big Bertha' from World War One. History, development, service, specifications, pictures and model. ... 420-mm (16.54 in) ... The history of Big Bertha: Named after Seattle's only female mayor Bertha Knight Landes. The machine itself was created by Hitachi Zosen ... In World War I, Big Bertha described the enormous cannon used by the Germans to destroy previously impregnable forts. Today, Big Bertha is used to describe the ... But Big Bertha's hardly been forgotten around Blackwatersbridge, County Kerry, Ireland. That's because Jerome O'Leary, who owned the unbelievably productive cow ... It's believed that Big Bertha and rocks like it formed on the Moon about 4 billion years ago, in the aftermath of an incredible asteroid impact.