Presumably they could use any suitable caves (if available) as shelters and store-rooms, but water is important to ALL civilisations!
Both civilizations built canals to water crops.
The caves above the lake are the caves that are "below" the lake they're the same thing don't worry bout it it's not really important.
Karst caves, and it is the majority of caves; formed by acidic ground-water dissolving the limestone.
They provided water for irrigation and agriculture.
The most important element for survival is water. We can survive days on water alone if food were not available. Therefore, settling near water was/is necessary.
Erosional caves are formed by the action of water or wind.
River valleys were the most important physical map feature for early civilizations because they provided access to water for drinking, irrigation, and transportation. Rivers like the Nile, Tigris, and Euphrates were essential for the development of agriculture and trade, leading to the growth of early civilizations.
Other way round! Water and/or air are in caves.:-) Most of the world's caves have formed / are forming in limestone.
they were important due to the fact that they connected many different civilizations. rivers helped the spread of different cultures and religions. they allowed civilizations to come in contact with one another and trade products they had for ones that they needed. also helped the spread of technology and helped some civilizations conquests and reigns.
The acid in the water forms it
The most common types of cave are limestone caves.
Access to water sources, such as rivers or lakes, was crucial for early civilizations because it provided water for drinking, irrigation for agriculture, and transportation for trade. Settlements often developed near these water sources to ensure survival and growth.