From ?panel.cloud
# since wireframe
calls panel.cloud
scpos: A list with three components x, y and z (each a scalar integer), describing which of the 12 sides of the cube the scales should be drawn. The defaults should be OK. Valid values are x: 1, 3, 9, 11; y: 8, 5, 7, 6 and z: 4, 2, 10, 12. (See comments in the source code of panel.cloud to see the details of this enumeration.)
# Didn't look up the source code. Was easy enough to experiment
wireframe(z ~ x * y, data=D, screen=list(z=-120, x=-60), scpos=list(x=9,y=5,z=2))