I have very strange artifact after DEM creation. You can see in attached file, that a strange crack appeared. As it is seen in the profile line, there is a ~2m gap between 2 parts of the DEM.
I combined pictures, that were acquired during 3 days of the expedition to the glacier. During all days GCPs were used. Lighting conditions vary between days, as well as flight altitude (because glacier is somewhat steep and UAV calculates altitude from the home point and stays on that altitude).
I have 2 questions:
1) What can I do with the pictures or project to eliminate this artifact?
2) What should I do better next time, when I will be doing UAV projects like this?