The boulders are tonalite, a hard volcanic rock, weathered over an extremely long time into rounded shapes that look stacked by hand. They sit in the flat middle of the island near Hooiberg, which is why the view from the top reaches both coasts on a clear day.
The climb is short (ten to fifteen minutes at a child's pace) and it has been made deliberately accessible, with cut steps, handrails, and a couple of narrow squeezes through gaps in the rock that kids will insist on doing twice. It is not a hike; it is a scramble with infrastructure.
At the base there is a cactus garden, a small snack bar, restrooms, and shade. Entry is free. Blue whiptail lizards are everywhere on the warm rock, which turns the descent into a second activity.
Go early or late. There is no shade on the rock itself, and midday on dark stone in the Caribbean is exactly as hot as it sounds.
Giant boulders stacked by nature, not people, and no one fully knows how they got here. Climb the marked steps to the top for a view of half the island.
Use marked paths and steps only.
More finds nearby
Ayo Rock FormationsQuieter than Casibari, with rock drawings over a thousand years old.
Hooiberg (The Haystack)Roughly 560 steps to the top, and a view of another country.
Blue Whiptail Lizard (Cododo)A turquoise lizard that lives on this island and nowhere else on Earth.
Turn the list into a treasure hunt
Buska gives kids 75 Aruban treasures to find and photograph (this one included) and turns the trip into a keepsake book. Free to start, no ads, private by default.