We present a methodology to retrieve 3D surface displacement based on Digital Image Correlation (DIC) applied<br />to multitemporal terrain models. Our approach has been developed to overcome the DIC limitation in the vertical component<br />of the displacement field when horizontal shifts are larger than the grid sampling. To validate the performance, we applied<br />the approach to two terrain models acquired over the Brienz/Brinzauls landslide, where surface displacements affect the entire<br />slope with heterogeneous amplitudes and directions. The comparison with in-situ measurements shows that DIC can accurately<br />retrieve horizontal and vertical displacements, providing a clear representation of the spatial extent of the mass movement, as<br />well as an accurate distinction of the internal landslide compartments. Our results are in good agreement with those obtained<br />using a state-of-the-art point correlation method, but require less preprocessing and computational effort. Thus, the proposed<br />DIC strategy can be considered as a valid alternative for measuring 3D surface displacements in scenarios where multitemporal<br />terrain models are available.