To view the thrombolites it's just 600 m stroll over the walkboard, it's not necessary (and not worth it) doing the 5km. You can just go to the giant and come back (3,5 km return).

Very nice development above the trombolites. We walked for 5km on the path that was indicated. In the top!

Nice spot.

But really too many mosquitoes to go out to take the picture ..