Stone monoliths are large, upright stones that have been carved or shaped by humans or nature. They can be found in various cultures around the world and often serve as markers for important locations or events. Some famous examples include the Stonehenge in England and the Easter Island statues, known as moai. These structures can vary in size and shape, ranging from simple standing stones to intricate sculptures. Monoliths are often associated with ancient rituals, religious practices, or astronomical alignments, reflecting the beliefs and values of the societies that created them.