pre-flood world jjj:
If you look at pictures of excessive rain, it changes the landscape. If the 40 days Noachian rain flooded Mt everest, at the rate of 8 meters an hour, what would be left of a fertile plot like Eden? The Colorado river of Grand Canyon fame has reversed directions in it's life time. The rivers are older than the mountains, so:
The bible is a story, the wt saga is a story about stories, Think outside that narrow envelope, a suggestion.
added: maybe there was no rain where the first bible documents where written, but it rained,- snowed in many place.(think Glaciers covering Europe, North America.)
of course, any Eden worth it's name would have hot springs,- right ? water coming up, not down.