What is .DPN file extension?
Data file used by Depiction, a mapping program used to explore and map dynamic "what if?" scenarios; contains the static information for a particular depiction, including maps, elevation, images, etc.
You can see a list of software programs here on easyfileopener.org that can open this file type so that you don’t need to search for it on the web. You can then open your file with this extension using a software listed below.