This article reviews some of terminology and types of elevation based datasets available to GIS.
This ArcGIS Pro tutorial shows how to add LIDAR data from the National Map to ArcGIS Pro and create topography contours.
Lidar is a technology developed to map the elevation of features on and below the surface of the Earth.
Next-generation Geiger-mode lidar’s high density and multi-angle looks offer a better chance of seeing through tree foliage to map what's underneath.
Paul Nash discuses Geiger-mode lidar and its use in geospatial data acquisition.