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Scientists estimate the subterranean river may be 6,000km long and hundreds of times wider than the Amazon
The Amazon flows much faster than the Hamza, however, draining a greater volume of water. Around 133,000m3 of water flow through the Amazon per second at speeds of up to 5 metres per second. The underground river's flow rate has been estimated at around 3,900m3 per second and it barely inches along at less than a millimetre per hour.
Originally posted by Alaskan Man
reply to post by Skate
i did a search for Rio Hamza, and it turned up nothing, I'm not going to spend all day trying a bunch of different search names if the official freaking name of what I'm posting about turns up nothing.edit on 8/26/2011 by Alaskan Man because: (no reason given)