PROBLEM
Note: This article pertains to retired ArcGIS versions 9.x and 10.0. Later versions of ArcGIS may contain different functionality, as well as different names and locations for menus, commands and geoprocessing tools.
When adding a 3D feature such as point, line, polygon or TIN to ArcScene, the feature appears as a vertical line.
The data is in a geographic projection. ArcScene assumes that the data loaded has the same vertical units as the defined horizontal units. This causes the vertical units to be stretched to a great extent.
There are three solutions to this issue; select one of the options below:
Project the data to a non-geographic projection
RasterAdjust the Z unit conversion for the layer to a very small value
Adjust the vertical exaggeration of the entire scene to a very small value
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