Variant: boulder

·    In many respects this resembles an upside-down CHAN = “sky”.

·    The subtle aspects where it differs are:

o The U is not lipped, and is more or less just a standard (bold) U.

o The U has a dotted spine.(never present in CHAN = “sky”).

o The two “pillars” tend to be curved (whereas they tend to be straight (or can be at an angle or have crossed bands in between) in CHAN = “sky”.