Instead of looking for cracks, consider the following alternatives:

Rocscience Slide 2 is a 2D slope stability analysis software used in geotechnical engineering. It helps engineers and geologists analyze the stability of slopes, embankments, and foundations.

The official website of Rocscience provides a free trial version of the software, which can be downloaded and installed on your computer. The trial version is fully functional and can be used for a limited period of time.