Heap or hole (bird's-eye view)? [Tas ou trou (vue aérienne)?]

Depending of the light source position,

a heap -the Sun is on the right-hand side-

can look like a hole -the Sun is on the left-hand side-.

Then, a heap or a hole?

(CMAP28 WWW site: this page was created on 12/24/1998 and last updated on 03/03/2016 07:44:38 -CET-)

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