TWO RIVERS SWEET AND BITTER TOGETHER

There are two rivers together in South Africa near Cape Town.These two rivers flow together.
These come to know in 20th century.ALLAH (SWT) mentioned about these two rivers
about 14000years back in  Holy Quran .
These two rivers flow together but taste of one river is sweet and other is opposite,that is bitter.
There is nothing between then to make them saperate them.This is only marical of ALLAH (SWT).