What does going down to the pit refer to in Ezekiel 32?

Ezekiel 32:17 - 21

ESV - ¹⁷ In the twelfth year, in the twelfth month, on the fifteenth day of the month, the word of the Lord came to me: ¹⁸ Son of man, wail over the multitude of Egypt, and send them down, her and the daughters of majestic nations, to the world below, to those who have gone down to the pit:

Clarify • Share • Report • Asked October 17 2015 • James Waweru