Within these limits from west-northwest to east-southeast, its length reaches 21 km and its average width is 12 km.
wɪðˌɪn ðiːz lˈɪmɪts fɹʌm wˈɛstnɔːɹθwˈɛst tʊ ˈiːstsˈaʊθiːst, ɪts lˈɛŋθ ɹˈiːtʃᵻz twˈɛnti wˈʌn kˌeɪˈɛm ænd ɪts ˈævɹɪdʒ wˈɪtθ ɪz twˈɛlv kˌeɪˈɛm.