Here’s a link to a picture of the “ngoma lungundu”:
http://news.bbc.co.uk/2/hi/africa/8522097.stm
“On each corner there is the remnants of a wooden ring, and obviously at one point, it was carried by inserting poles through these two rings on either side,” he said.
“Of course in the biblical account, that’s precisely how the Ark of the Covenant was carried across the wilderness.”
Thanks.