Hillside Junction is Matt's ficticious lumbermill town located between San Bernardino and Arrowhead in the forested mountains of southern California. Logs in the mill pond await cutting at the mill which is served by HOn3 tracks which are the terminus of the Hillside & San Bernardino Railway. The narrow gauge connects to dual-gauge track that passes over a scratchbuilt A-frame timber bridge and runs through adjacent modules. Structures include a station, water tower, oil facility and a sawdust burner that really smokes via burning incense inside. Unfortunately, Matt's cat got onto the module and destroyed most of it.
Matt plans to build a new module as soon as he can move into a home where there will be room for it.