Atlas4k is a collection of mostly of both ground and aerial UHD video clips of reportage, travel and nature subjects dating back to 2009. Since 2017 most clips are filmed in 4k.
I have a good collection on the north of Scotland, some parts of England, Portugal (all 1080p) and more recently Greece. Since 2018 I have done a lot of drone shots - mostly in the Scottish Highlands - many of which are now available here on Pond5.