Scattered across this unusual landscape are hot springs that are reshaping the mountain. Water heated deep underground rises to the surface, percolates through buried limestone, dissolves calcium carbonate, and above ground deposits that calcium carbonate to build travertine terraces. The terrain has changed over time and will likely look different in the future. Underground channels sometimes shift or clog, causing the water to change course on its journey to the surface. Above ground, springs may slow down or stop, new springs may bubble up, and dormant springs may flow again.