Tolkien related video's.

{{ Best I could do, given Tolkien reckoning only 6000 years between end of fourth Age and present Day, so a total of about 9000 years including 4th, that the Ice Age would have to be it, Eru covered the north in Ice driving out everyone and destroying most of it, then reshaped the land under the ice and when it withdrew, bingo! present day Europe.
That of course requires the north was free of ice for a period to account for first to fourth ages- but think got that covered! Interglacial cooling period, that's first age, elves and men pop up in the north, Morgoth gets pissy. And its Morgoths realm of ice and cold that causes another ice age, then he's taken out and a second interglacial cooling period lasting about 6000-8000 years (that we, um just haven't found out about yet) is required to accommodate 2nd, 3rd and 4th ages before the ice returns, lasting from the 5th through to 7th age, before melting again on our calendar about 11,000 bc. Allowing humans, the elves having buggered off, to move back north and rediscover some of the remains of long ago, allowing them to eventually imitate some of what they find in building and styles (whether that's barrows in Northern Europe, or Pharaohs crowns in Egypt). Best I can do! }}

Need to change Tolkien's estimate to include an ice age.