Boulder till.

Just like regular till, boulder till is the result of the grinding and displacement of rock and soil by an inland ice sheet. This type of till contain, as the name suggests, a remarkable amount of boulders, often with a diameter greater than 1m. The abundance of boulders make areas with boulder till difficult to dig or pass with most vehicles.

Boulder till replaces dirt in BetterGeo.

Boulder till is not suitable for cultivation.