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The right slide shows the 3-D depth grid block clipped with a 2-D grid of the upper surface of the cave.
	The left slide shows the 3-D depth grid block clipped with both the upper and lower cave surface 2-D grids. The final step is to clip this model with the polygon outlining the cave walls. The result is a fully manipulative 3-D model of the cave showing the trend of the collected data through the conduits.