[Talk-us-massachusetts] aerial comparisons

[hobbit at techno-fandom.org]

I've been flipping through various image layers when trying to find a small
reference detail, such as visible parts of trails and stone walls in winter
shots, etc.  It's also interesting to see how some of the park boundaries line
up [well, almost in some cases] with the parcel layer.  Some GIS-years are
clearer than others and it's not any preferred one for everything.

What I find super-interesting, and this is probably my naivete showing, is
how the GIS and Strava and whatever layers are accessed through a template
URL that dynamically gets filled in with the right magic numbers.  I guess
there's a standard for how all that is supposed to work?  How similar is it
to the OSM tiling?

_H*