Here, using a large tropical cave as an example (passages can reach 80m wide), you can compare the raw output from Tunnel with the same data transformed into VRML coordinates ..


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  • Cosmo does not scale its window according to the size of the world being displayed (some browsers do).
  • There are no cues as to orientation or scale.
  • The inside of a wall is the same colour as the outside.
  • Viewpoints allow the scale of common projections to be predefined.
  • An orientation device can be included; as can a scale (but that's more difficult to design and use)
  • Inside and outside of wall can be differentiated by colour, transparency, and other attributes.