They are stones that have been carved by the Olmec, a civilization that existed more than 3,000 years ago, before the Aztecs or Incas. They took stones, some weighing up to 48,000 pounds, and carved on them using simple stone and wood tools.
They tell a story of a culture of that period, but little about the Olmec lifestyle, where they came from, or where they went, leaving behind their creations. Excavation began 100 years ago and continues to today, and new art works are still being found.
The exhibition here comes from the collections of 25 museums around the world.