فَتَرَى الْقَوْمَ فِيهَا صَرْعَى كَأَنَّهُمْ أَعْجَازُ نَخْلٍ خَاوِيَةٍ
(so that you could see men lying overthrown (destroyed), as if they were hollow trunks of date palms!) (69:7) means, they were left as headless bodies, because the wind would come and carry one of them, then drop him on his head, so that his brains were spilled out, his head was broken and he was thrown aside, as if they were uprooted stems of date-palms. They used to build fortresses in the mountains and caves, and they dug ditches half as deep as a man is tall, but that did not help them against the command of Allah at all.