בְּרַגְלַ֖יִם תֵּֽרָמַ֑סְנָה עֲטֶ֥רֶת גֵּא֖וּת שִׁכּוֹרֵ֥י אֶפְרָֽיִם׃
Con los pies será hollada la corona de soberbia de los borrachos de Ephraim;
Radak
בתוך אהלו, the letter ה at the end of אהלה, where we would expect the letter ו for the masculine ending “his,” is interpreted (and quoted by Rashi) as an allusion to the ten tribes who have been referred to as אהלה in Amos 6,6, and whose exile has been attributed to their excessive drinking of strong wine both in Isaiah 28,1 and Amos 6,6). From a grammatical perspective, the construction here is not really so unusual