.ETA File Extension
What is an ETA file?
File created by Google Earth, a global mapping program; contains a marker for a location in the world specified by longitude, latitude, zoom, rotation, and tilt; provides users with an overhead view of the location.
ETA files have been replaced by .KML and .KMZ files in newer versions of Google Earth. They were originally used for EarthViewer 3D by Keyhole, a company that was acquired by Google in 2004.
Programs that open ETA files