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>In theory these Aquifers could be used as a cheap form of transport... For what it's worth, an aquifer isn't an underground river... It's solid rock. What wo

• Retric 11y ago
  Water, it's fine if it takes 10 years to move water from point A to point B as long as you don't need to build and maintain a pipe. Also, they are not solid rock or water, it's more like gravel with water in-between but the flow rate can get fairly high due to size even if the flow speed is very low. 1 mile per day is slow but * 365 days * 10 years that's a long way.