The "cave" inside the Hill Cumorah is actually an ancient manmade room with walls made out of stone (This is my 2nd upload of this video, because I had to make 3 big corrections, which I explained in a previous video of why I deleted the 1st video). This video explains how the room was accidentally discovered in recent years! The first set of ancient metal plates that The Book of Mormon was engraved on did not come from the room, but were buried near the surface of the hill around 421 A.D. and taken out of the hill in 1827 A.D.. The room in the hill had many other ancient metal plates and artifacts inside of it, but according to David Whitmer, it was emptied out and they were hidden somewhere else sometime before the Church of Jesus Christ of Latterday Saints left New York and moved to Ohio.

Here are the links to see the actual photos of the hole that goes down into the room:
Article: https://bookofmormonevidence.org/aho...
DVD: https://bookofmormonevidence.org/book...

And here is the link to the video playlist about the Hopewell Moundbuilders and how they match up with the people of the Book of Mormon (Part 6 is the video that I mention in this video, which has a lot of nonLDS sources for Native American stories of the palefaced Hopewell Moundbuilders and their destruction in war).
PLAYLIST:    • Book of Mormon Evidence Pt.1: Hopewel...  

Many Native American tribes still have Hebrew/MiddleEastern linguistics/customs still preserved in their cultures to this day. Some of them are descendants from the people in the Book of Mormon. The ancient North American Moundbuilder civilizations correlate with the people in The Book of Mormon. They built fortified cities the way those people did. They had metal armor and swords like those people did. They made mounds filled with human bones like those people did. They had ancient Hebrew/MiddleEastern writings like those people did. They had some X2a DNA that traces back to the Mediterranean/Middle Eastern area where those people came from.

The Book of Mormon is a true record about a group of believers in God the Father and His Son Jesus Christ, who left Jerusalem in 600 BC and ended up somewhere in ancient America. It covers the years 600 BC 421 AD, and also includes a brief record of a much earlier group of believers in God and Jesus, who left the Tower of Babel (approximately 2200 BC) and ended up somewhere in ancient America as well.

There is plenty of evidence in North America supporting the Book of Mormon. Read the Book of Mormon and research the Moundbuilder civilizations (especially the Hopewell and the Adena). You will find that there were once great ancient civilizations right here in the United States and Canada that you most likely had never been taught about in school.

You can get a free BIBLE and BOOK OF MORMON at: https://www.churchofjesuschrist.org

Other great sites:
http://www.BookofMormonEvidence.org
http://www.AncientAmerican.com
http://www.LDSArchaeology.com

Watch Wayne May and Rod Meldrum on YouTube

Also, watch "Nephite Explorer" and "Hidden In the Heartland" on http://www.truenorthtv.org