The Seven Coloured Earth is one of Mauritius's most distinctive geological curiosities — a small area of undulating dunes made of volcanic soil weathered into bands of red, brown, violet, blue, grey, and green. The colours come from the differential weathering of basaltic lava into various iron and aluminium compounds. The result is a naturally occurring palette of earthy hues that changes subtly depending on the light: brightest in the morning sun, more muted under cloud cover.
A fenced walkway circles the viewing area, which is relatively small — perhaps 25 metres across. The surrounding site includes a giant tortoise enclosure, a café, and a gift shop. The entrance fee is modest. Despite the crowds (this is one of Mauritius's most visited sites), the dunes themselves are genuinely striking. Nearby, a few hundred metres through scrub, the Chamarel Waterfall drops about 100 metres into a gorge — the same entry fee typically covers both sites.