What type of geological formations are commonly found inside Niagara Cave?

The common geological formations found inside Niagara Cave include stalactites and stalagmites. These formations are created by the deposition of minerals from dripping water over time. Stalactites hang from the ceiling of the cave, while stalagmites grow upward from the ground. This process involves mineral-rich water seeping through the rock, leaving behind deposits of calcium carbonate as it evaporates. The presence of these formations is a key indicator of the cave's unique environmental conditions and mineralization processes, making them significant for understanding the geological history of the area.

In contrast, granite formations are typically associated with other geological settings, while sandstone cliffs are found in different types of environments, often not in caves. Fossilized trees indicate a different process entirely, relating to organic material rather than mineral cave formations. Thus, stalactites and stalagmites stand out as the defining features of what is commonly found within Niagara Cave.