Here's a more fun headline: Himalayas have 100x storage capacity for gravity battery as we'll ever need! The design of the mine seems inefficient. Why not use

Here's a more fun headline: Himalayas have 100x storage capacity for gravity battery as we'll ever need! The design of the mine seems inefficient. Why not use water and a pool on top? The water can use the side tunnels and store more. Sand sounds like a dumb idea.