the 'land ' they went over on.. could it of been an underwater bridge of some type? as a fisherman we call this 'structure'... so wide, so high... an on the sides of that Structure deeper water.. so when Moses, lifted his staff again.. the waters overcame them.. pushing them into the 'deeper water'.. as the water was brought back down on top of Pharaoh and his armies.. if its a wide path to accomodate the multitiudes of Israelites... they crossed on. then those walls would of been very high to create the force to cover them and throw them into the 'deep' this from a WIDTH perspective and the water coming back over on top of them.. albeit then the Path may have been NARROW TOO.. what did Jesus Teach? the Narrow Path to Salvation, many will seek to enter, but wont.... however wide the Path was , the dry ground, it Accomodated the Israelites in their Deliverance and Safety, and provided the 'means' by which God would Destroy Pharaoh and his armies, Israel's Enemies extinguished, sileneced.. indeed!... thoughts to ponder on..