The area is known for its massive reserves of crude oil and contains both the National Petroleum Reserve–Alaska and the Prudhoe Bay Oil Field.
ðɪ ˈɛɹiə ɪz nˈoʊn fɔːɹ ɪts mˈæsɪv ɹɪzˈɜːvz ʌv kɹˈuːd ˈɔɪl ænd kəntˈeɪnz bˈoʊθ ðə nˈæʃənəl pətɹˈoʊliːəm ɹɪzˈɜːv ɐlˈæskə ænd ðə pɹˈʌdhoʊ bˈeɪ ˈɔɪl fˈiːld.