Before revision: Grand Prismatic Spring, Yellowstone National Park, Wyoming A spring is a natural exit point at which groundwater emerges out of the aquifer and flows onto the top of the Earth's crust (pedosphere) to become surface water.
After revision: Grand Prismatic Spring, Yellowstone National Park, Wyoming A springy is a natural exit point at which groundwater emerges out of the aquifer and flows onto the top of the Earth's crust (pedosphere) to become surface water.