Hoodoo

Fairy chimneys or hoodoos are formed of a column made of sandy and stony brittle layers and a more solid rock that covers the column and ends up falling. Here the cap has come off. So how are these hoodoos formed? Two opposing theories (see mountain bike hiking, the Pierre Dimanche Canal for the second theory). Some geologists believe the cap placed on the column prevents water from coming up by capillary action. This phenomenon promotes the deposition of minerals contained in the water and cements the sediments beneath the protective rock. The columns are therefore already formed in the soil and erosion will gradually discover them