What is a lpk file and how do I open a lpk file?
An LPK is a GIS data file used by ArcGIS Desktop. It contains a map layer and its data that can be imported into another map or globe and is used to share self-contained map layers. The file can be uploaded to the ArcGIS Online service to share online. LPK files can be used by both ArcMap and ArcGlobe, included as part of the ArcGIS Desktop software.
Relevant lpk file links:How to open lpk file on Youtube
How to open lpk file on Wikipedia
How to open lpk file on Microsoft.com