شاهدوا اكبر و اعمق 10 حفر في العالم تمتد على كيلومترات
سبحان الله
Mirny Diamond Mine of Siberia
Great Blue Hole – Belize
Burning Gates of Turkmenistan
Kimberley Big Hole - South Africa
Bingham Canyon Mine – Utah
Glory Hole in Monticello Dam California
Diavik Diamond Mine – Canada
Guatemala Sinkhole
Chuquicamata Copper Mine – Chile
Udachnaya Pipe – Russia
