Wo àlàfo tó wà nísàlẹ̀ yìí, kí o sì dáhùn ìbéèrè tó wà lẹ́yìn rẹ̀ ní èdè kan náà tí àlàfo náà: Àlàfo: The Lone Star Producing Company 1<unk>27 Bertha Rogers hole or well was an oil-exploratory hole drilled in Washita County, Oklahoma in 1974, and was the world's deepest hole until it was surpassed in 1979 by the Kola Superdeep Borehole, dug by the USSR. Ìbéèrè: Nibo ni wọ́n ti ṣe àlàfo 1-27 Bertha Rogers?
Ìpínlẹ̀ Washita, Oklahoma