Rock of Guatapé

For yet seven days, and I will cause it to rain upon the earth forty days and forty nights; and every living substance that I have made will I destroy from off the face of the earth. Genesis 7:4

"The Rock of Guatapé, in Colombia, as it is also known, is

composed of granite. It was exposed when the surrounding landscape was eroded in the second ‘half’ of Noah’s Flood, as the continents uplifted, the ocean basins sank, and the floodwaters that initially covered the whole continent flowed across the area into the ocean.
From images on Google maps, Google Earth, and the internet, it can be seen that there are hills surrounding the rock that are of similar elevation to each other and to the rock. 

In other words, 

--there was a higher land surface that has been eroded out. 

--The original land surface would have been carved flat earlier during the Flood when the waters covered the whole area. 

--The large valleys that are eroded into that surface would have been eroded later in the Flood by the strong water currents flowing to the ocean in wide channels. 

The rock is part of a huge volume of granite, called a pluton, that formed in the first ‘half’ of the Flood. 

--Energy released by the movements in the earth’s crust melted rock and the molten magma squeezed up into the overlying sediments, forming enormous underground ‘pools’ there. 

--Then the magma cooled and crystallized as granite.
Geologists call these enormous movements in the earth’s crust “orogenies”. This article on Noah’s Flood the big picture explains these crustal convulsions and their relation to the formation of granites and other igneous rocks.

My preliminary surveillance of the web indicates that the Triassic

and Jurassic rocks in this region are comprised of marine sedimentary deposits, indicating the area was under water. This fits the interpretation that they were deposited as the waters of Noah’s Flood were rising and nearing their peak.
--After these sediments were deposited, in the period labelled the Cretaceous, movements in the earth’s crust pushed up the mountain ranges along the west coast of South America. 

In this area the range is called the Cordillera Occidental, or the Western Cordillera, which is part the Andes. It is described as being pushed up because of the Nazca and South American plates colliding, which is quite reasonable. 

--The movement of the plates would have been caused by the ocean basins beginning to sink and the continents beginning to lift up. Thus, the floodwaters began to drain. 

--This crustal movement generated the molten magma which created a belt of granitic rocks alongside the edges of the Cordillera Occidental, of which the the Rock of Guatapé is just one small outcrop, relative to the whole." 

BiblicalGeology