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Given the following post, respond as if you're commenting on Reddit:
human
[Tolkien]I am eccentric billionaire with vast financial resources. Since Middle Earth is the distant history of our world, there must be corpses or artifacts somewhere? What would be the best place to search and best way to go about finding some?
gpt
All this happend atleast 10000 years ago, possibly further back, considering how much The land has changed. (most likely before The ice ages) which means that there wont be many corpses, but maybe fossiles. However, elvish swords does not degrade, meaning they Will still be around. And, your best bet to find those would probably be either in the old Belerand, where there are many massgraves from The first age, (my guess is that it would be somewhere in the northen atlantic) or around mordor, which most likely was situated around where The middle East is today, or maybe where turkey is, Southeast europé. However, its very unlikely that anything from The first age due to The reshaping of The world, which might have pushed a lot of stuff far too deep into The earth. 

You will most likely not find any cities, since it was so far ago that they Will have most likely fallen. However, The walls of minas tirith, and The tower of isengard was absurdly durable, and was considered indistructable, so its possible they are still around somewhere. (However, baradur was also considered indistructable but was mostly destroyed in the second age and only survived by saurons magic, buts its possible that the first tower was not built in Adamant, or numenorians knew how to destroy it.) If these are still around, they are most likely burried considering how much The land has changed. Since its very hard to compare maps from that age with The modern ones, we simply doesnt know where to look. Middle earth was most likely europé, but beyond that we dont know much.