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A clueto understand wetting hysteresis on superhydrophobic surfaces is therelation between receding contact angle and surface textures. Whenthe surface textures are large, there is a significant distributionof local contact angles around the drop. As seen from the cross section,the apparent contact angle oscillates as the triple line recedes.Our experiments demonstrate that the origin of these oscillationsis a finite size effect. Combining side and bottom views of the drop,we take into account the 3D conformation of the surface near the edgeto evaluate an intrinsic contact angle from the oscillations of theapparent contact angle. We find that for drops receding on axisymmetrictextures the intrinsic receding contact angle is the minimum valueof the oscillation while for a square lattice it is the maximum. [ABSTRACT FROM AUTHOR]