Jalapão State Park has many river springs that you can take a dive at.
It is impossible to sink there because of the upward flow.
The access is restricted and the number of tourists is limited. Also you can not use soap, sunblock or insect repelant if you want to bath there.
One of them has the thinest sand I've always seem. Looks like wet powder, or a cream.
Thank you for looking.
