[Talk-us-massachusetts] Mapping stone walls

[Greg Troxel]

Can you explain what "bare-earth" means?  It seems obvious that there is
some intent to measure solid things on the ground and ignore trees, but
that's easier said than done, and I am curious what's involved
technically.

Apparently this is about excluding buildings, if I follow.

https://docs.digital.mass.gov/dataset/massgis-data-lidar-terrain-data