Building Like structures inside crater

It is an area called Mare Moscoviense and we can see a long rod shaped object inside the crater, an elongated structure. What could it be ? We can also see many other structure around the crater.
It is not very clear picture however we can clearly identify the unusual structures on the surface. Most striking feature is long eongated structure. If I assume other small structure are rocks then what about this long structure as it cannot be a rock. The structure is around 150m in lenght and 5-10m wide.