Unearthly Products Division is happy to deliver: The Inverted Seafloor Globe. The Earth's ocean floor is raised up instead of being sunk down. The 3D model shows the deep trenches as peaks. For example, in the first photograph, at the lower left side, peaks are seen for the deep Tonga Trench. The elevations are reversed so that trench rises up to become tall peaks. ETOPO2 database. Exaggerated 350x for elevations. The land is smooth and sunk down lower than the sea. What if your world were turned upside down? A new video game lets you find out. Buy "Planet Smasher" today! Lay waste to continents. Upturn tectonic plates. This is big. Materials science is illustrated by using tungsten in a giant's factory. Huge tools smash the planets. H-Bombs move crust. Originator: National Geophysical Data Center (NGDC) Originator: ESRI Publication_Date: 2004-03-01 Title: Global Digital Elevation Model (ETOPO2) Edition: 2004 Geospatial_Data_Presentation_Form: raster digital data Series_Information: Series_Name: ESRI® Data & Maps Issue_Identification: 2004 Publication_Information: Publication_Place: Redlands, California, USA Publisher: ESRI Other_Citation_Details: Location: worldelevation Description: Abstract: Global Digital Elevation Model (ETOPO2) represents gridded (2 minute by 2 minute) elevation and bathymetry for the world. These data were derived from the National Geophysical Data Center (NGDC) ETOPO2 Global 2' Elevations data set from September 2001.I wrote a Perl program like this: sub tecton_from_array { $row=-1; for ($j=$lat_top; $j<=($lat_bot+$radian/2); $j+=$radian ) { print "!"; $row++; $col=1; for ($i=$lon_left; $i<=($lon_right+$radian/2); $i+=$radian ) { make_point(); $col+=$interval; } } } sub make_point { if ($filtered_surface[$row][$col] < $flood ) { $filtered_surface[$row][$col] = $flood; } $x= $pixel_width$col; $y= $pixel_width$row; $z= -1($thick + $filtered_surface[$row][$col]$exaggerate);