There is a rejuvenation of nature in spring and the process is in some way caused by the raising up of the sky roof by the 'eel'. The 'eel' is working his magic by pressing hard against land and sky, forcing them apart.

The top of the niu glyph often has all 4 'limbs' (cardinal directions) 'open' (meaning 'spooky'), but in Eb3-22 the bottom right one is higly alive, forming the body of 'Rigi':

The cardinal directions seems to be are arranged so that the 2nd quarter is represented by the 'eel'. If the directions are ordered counterclockwise (which is reasonable if left corresponds to the past) then the 3rd quarter must be seen at top right.

The path of the body of 'Rigi' appears to go right through the cross, with autumn equinox (initiating the 4th quarter) at top left.