We arrived a Bonito at 8.00 am and recovered quickly from our cramped bus ride where sleep was only fleeting!
After some breakfast in a nearby café we caught an old rattly taxi to the Gruta do Lago Azul (Blue Lagoon Cave) some 19 km from Bonito village.
A 200 m descent via slippery stone steps in semi darkness brought us into the main hall of the cave with its crystal clear water below us. The water was so clear that it was difficult to acknowledge that a rock visible in the water was 15 m below the surface.
We took lots of photos but needed to up the ISO rating to 2500 to get the effect of the azure water.
The cave had the usual stalactites and stalagmites but the water colour was the stand out feature. The only animal life in the water are small 5mm crustaceans.