But there's a batholith here too. A batholith is a vast amount of magma that was once underground in the dark, feeding volcanoes, and that red hot molten magma, the magma chamber, slowly lost its ...

The geological abnormality is part of the Boulder Batholith, a 1.2 million-acre mass of igneous rock created by volcanic eruptions millions of years ago. The 160 acres known as Ringing Rocks is ...