The most common type in early use was the stone fougasse, which was a hole simply filled with large rocks and bricks.
ðə mˈoʊst kˈɑːmən tˈaɪp ɪn ˈɜːli jˈuːs wʌzðə stˈoʊn fˈaʊɡæs, wˌɪtʃ wʌzɐ hˈoʊl sˈɪmpli fˈɪld wɪð lˈɑːɹdʒ ɹˈɑːks ænd bɹˈɪks.