Side-by-side map website

So many pubs have been obliterated by the A14 🙁

You can order maps from there. I got one for a friend. Really nice gift for those so inclined 

I opened this thread thinking "like the NLS website?" 😂

I'm a fan of the geo referenced overlay. Layering old maps on current aerial imagery has been a fantastic way of locating and documenting old tracks and settlements. 

They've (NLS) just added earlier first series 6" maps to the site. That's this afternoon occupied then.

Fascinating site with excellent tools.

I've had this bookmarked for years. It's absolutely wonderful and yes they have added more older maps recently. The map finder link on that main page has a lot more maps than the side-by-side mapping, by the way.

personally, i prefer the spy glass interface:

https://maps.nls.uk/geo/explore/spy/#zoom=13.9&lat=53.26049&lon=-2.13239&layers=6&b=ESRIWorld&r=30

I like the overlay I like following old roads and railways to see what used to be where. And looking for railway structures, hidden on modern maps and aerial views. 

I think wheresthepath (or something like that name) does similar as well

Thought the thread was going to be about this site I used to use before RidewithGps came along 🙂
https://wtp2.appspot.com/wheresthepath.htm

I spend too many hours on the NLS website, looking at the 1:10k maps from 1900.

This is another favourite: BGS Geology Viewer
https://geologyviewer.bgs.ac.uk/

Ace! Thisll keep me amused for ages 👌

Its easy to spend a lot of time looking at this! I find it interesting how many of the paths I ride now existed before 1900. Some where I currently live (North East) were railways serving the coal mines, Many in the Dales where I grew up are on the map too, such as the path up to Weets Top, and Stockdale Lane across to Malham Cove.

I find it interesting how many of the paths I ride now existed before 1900

There was an article I read about some research into paths in the US. It found that tracks that existed today had been put there by native Americans, who in turn had followed tracks made by the animals they hunted, who in turn had been following tracks made by long-extinct mammals, who in turn had followed tracks made by even more long-extinct dinosaurs.

Thats a nice story but when you consider the geological changes to the USA in the last 65 million years that's stretching it a bit. The last couple of million years of glaciations have remodeled the geography in much of the north and mountain regions, many areas are younger than that geologically, and erosion has removed/redeposited many meters elsewhere.

bit of a tangent, but please enjoy this graphic suggesting how Geology influences elections: