This is the at the very beginning of the game where you are supposed to enter the grotto at the bottom right corner of the map (I googled for its exact location). I know how to enter the grotto on my Xbox but what sort of control do I use on iPad? I've tried tapping, double tapping, swiping left and right, and repeating 'open sesame' to no avail. Does anyone know?
Here is a pic of where I think the location of the hollow tree is.