Reminds me somewhat of the Palouse in eastern WA, USA.
Palouse - Wikipedia
Not quite as "chocolate kiss" shaped like the ones in the Philippines but reminiscent nonetheless.
The Palouse is attributed to
loess deposits which would make the geology different from Karst formations. There are theories that these massive loess deposits can be attributed to a cataclysmic flooding.
The wiki page for Chocolate Hills seems to be running some sort of damage control for a particular narrative:
Self-published, popular web pages present a variety of fanciful and less credible explanations about how these hills formed. They include sub-oceanic
volcanism; limestone covered blocks created by the destruction of an active volcano in a cataclysmic eruption;
[16] and tidal movements.
[17] The lack of any exposed or associated volcanic rocks in the Chocolate Hills refutes the popular theories involving volcanic eruptions. The theories involving either a sudden, massive geologic shift, coral reefs being erupted from the sea, or tidal movements lack any corroborating evidence and support among geologists.
Similar to the loess deposits of the Palouse in Washington it seems that the mainstream will go out of their way to attempt to disprove the idea of a sudden, cataclysmic event creating these chocolate hills. In my mind the result of a massive volcanic event creating these hills seems more likely than the bizarre gradualism explanation that has been found and provided in this thread.
All of that to say that it is still possible these are not manmade structures, but the true origin could possibly be connected to a previous global cataclysm in some way.
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Thinking about this site also reminded me of a different site local to me here in Arkansas. The site is called Potato hill.
It is difficult to get good images of it since it is located on military property. It is a common target of artillery fire used in training. If you look this up on google earth you will find pockmarks of decades of shelling.
Similar to chocolate hills, Potato hill also has a common geological explanation. In this particular case however, this is the only formation of its kind in the area which is surrounded by pretty standard ozark hills and plateaus. However it is very difficult to get solid information on the site since it has been under military control for the better part of a century.
I will say having seen it in the distance when traveling it is unlike any formation I've seen in the area - it certainly does look like it has defined sides and corners. Unfortunately I doubt much will be uncovered about the site - though it is refreshing to hear that many locals do not believe it is a natural formation and think it might in fact be some type of pyramid structure.
