At ABC m, Ta'Dmejrek is the highpoint of the Republic of Malta. Located on the main island of the country, also called Malta, it's not a mountain; I wouldn't even call it a hill. It's just a small plateau, most of which is occupied by a quarry for building materials - which implies that what is the highest point right now might one day be dug up to sell the sand or limestone below it. The quarry is easily recognizable on Satellite View.
Ta'Dmejrek is an underwhelming place to visit. The quarry doesn't help with the scenery, and, being a plateau, the summit views are not what you might expect from the highest point of a small island. However, as if to make up for that, immediately south of the plateau lies a dramatic coastline with the sheer Dingli Cliffs, a great site and perhaps the best place to watch the sunset, at least in winter.
The highest point is just a few meters north of the coastal road, Triq Panoramika - the name says it all.
Cache is placed at N 35° 50.(B+1)(B+C+1)(A+2) E 14° 23.(B+3)(C)(A+C). Enjoy it!