To determine the depth of the main waterfall at Parque Nacional Iguazú, we can search for reliable sources that provide this information. One way to find this information is by visiting the official website of Parque Nacional Iguazú or any reputable travel or tourist information websites that have details about the park.
Another way is to search for documentaries, articles, or videos specifically about the Parque Nacional Iguazú or the main waterfall within the park. These sources often provide in-depth information about the park and its natural features, including the depth of the main waterfall.
Alternatively, we can also refer to travel books or guidebooks that feature Parque Nacional Iguazú. Such books usually have comprehensive information about the park's attractions, including the depth of its main waterfall.
It's crucial to rely on reliable and authoritative sources to obtain accurate information.