Yes, the world's largest known ancient obelisk, known as the Unfinished Obelisk, is still partially "in the ground" at its original quarry in Aswan, Egypt. Commissioned likely by Queen Hatshepsut over 3,500 years ago, it was intended to stand about 42 meters (137 feet) tall—nearly a third larger than any obelisk ever erected. However, during the carving process, a massive crack appeared in the granite bedrock, causing the project to be abandoned. Because it was never detached from the surrounding rock on its bottom side, it remains a permanent part of the quarry. Today, the site is an open-air museum that provides unique insights into ancient Egyptian engineering. You can still see the marks from the workers' dolerite tools and the red ochre lines used for measurements. If it had been finished and successfully raised, it would have weighed approximately 1,200 tons. It remains a staggering testament to the ambition of the New Kingdom pharaohs and the inherent risks of monumental stone-working in antiquity.