What does Isaiah 16:7 mean?

So everyone in Moab will be mourning, grieving for the lost wealth of Kir-hareseth. They'll remember how much they had, and now it's all gone. Isaiah 16:7 - Modern Text Bible

(This verse describes the people of Moab lamenting the loss of their prosperity and the destruction of their city, Kir-hareseth. The grief is both for their ruined land and their lost riches.)