What is .BTO file extension?
3D object used by Bryce, a program used for 3D modeling and scene generation; contains a 3D model of a tree that can be added to a larger scene; used for generating landscapes with specific types of trees, such as pine, birch, or maple trees.
The Bryce installation includes several BTO files in the /Presets/Trees/ directory.
You can see a list of software programs here on www.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.