Wow. Some back story might be nice though. This is not just from the explosive, but from air from a tunnel rushing in. From YouTube: "Here is 150 kg exlosives blown up to make a hole from the lake at 410 m. over sea level to a tunel leading to a hydro powerstation at sea level. It takes about 5 min for all air in the tunel to escape up in the lake and making serius bubles and waves. "
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Wow. Some back story might be nice though. This is not just from the explosive, but from air from a tunnel rushing in. From YouTube:
"Here is 150 kg exlosives blown up to make a hole from the lake at 410 m. over sea level to a tunel leading to a hydro powerstation at sea level. It takes about 5 min for all air in the tunel to escape up in the lake and making serius bubles and waves. "
it looks awsome.
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