@Recognition shared his findings with me, and I think we could do some related research. I am not sure how credible Google underwater imaging is, at the same time right angles in nature are very rare.
	
KD: Well, I don't know whether what we have was indeed a pyramid, but it could be a structure of sorts. Let's see what we can find out.
				
			- In this case we are talking about a possible 10 miles by 10 miles underwater structure.
 - The structure appears to resemble some of the pyramids we would commonly see on the other side of the Atlantic ocean.
 
- The island is an inactive volcano with a total surface area of only 3.4 km2 (1.3 sq mi). 
 - The highest point on the island, Punta del Corvo, is 421 m (1,381 ft) above sea level. 
 - There are thermal springs near the village of Punta di Peppe e Maria.
 
- Etymology of Euonymos: from Ancient Greek εὐώνυμος (euṓnumos, “lucky”), from εὖ (eû, “good”) + ὄνομα (ónoma, “name”)
 
KD: Well, I don't know whether what we have was indeed a pyramid, but it could be a structure of sorts. Let's see what we can find out.