Ep!

where is the zero point of "sea level" (gps coordinates) ????

in what sea/ocean ????

in what point ???

how is measured altitude of mountains ?

how mach meters have the Gaorisankar (Everest) ???
some people say 8.848 others 8.850... what is correct ???

Dead sea is at "sea level" ???

the big depression in water surface in Indic ocean of -300m. is also at "sea
level" ??

after indic tsunami and global changes in planet "sea level" also sufer
variations ???

a reveure des Catalunya, the YoYoMan :-)