"4,000 Year Old Chinese Ceramic Water Pipes Discovered At The Pingliangtai Archaeological Site In The Central Plains Of China"
The Veryovkina Cave is a little bit deeper. Just a few metres: 2223metres.
But... Indeed... both caves belong to the same Arabika Massif. So, actually they are kind of neighbours.
#40 I remember when that guy was found. Amazing story.
Another great list, Iz. Thanks. Keep 'em coming.