Those are nice. This post made me look & I found the Lidar imagery for our place on the Wikipedia page. It’s amazing the amount of detail and accuracy. Here’s a view of one of our ravines that’s around 55 foot deep w/ a small year round spring fed stream. We have multiple springs coming out of the hillside in the form of weeps,
For topo maps I like the USGS website, great historic collection.
The description of the Nat Geo service from the link at the top, only mentions the USA. When I tried to explore the Nat. Geo page itself it insisted I give them my email address - been there, done that in the past and they spammed me like crazy - so I passed today.
That said, many Municipalities have mapping software that shows the topo lines. The public ones don't show them as close as I was told they did, and in my case it is that the software's too expensive for general distribution. However an employee very helpfully put the info up on his screen and when I told him I needed that level of detail to find ways to hold water on my land and slow run-off, he not only printed several copies on 11x17" sheets, he didn't even charge me. I think I simply made his day by being so interested and caring about the environment.
Seems like you could post that in either "you know you're a permie when..." or "simple pleasures of the day", and I totally agree. However, from a permie perspective, it is actually useful fun!
Just how much slope is that area?
What's the flattest route from Point A to Point B?
I need enough elevation change to do "X" - is there a spot on my land with enough drop?
Oh, there's a natural dip there - if I dug down there could I make a pond?