People need a map.
http://itm-asp.com/cc/1615/XTD65r2T
Kotomi is KoToumi or KoToomi in accurate. I've been in Goryu 47 ski area, but not in BC.
A tele ski trip dated Feb 23, 2005 with GPS data:
http://www.webnagano.jp/gps/kotoomiyama.htm

I found a reading mistake in this map.
http://itm-asp.com/cc/1615/972tp4do
Obinata-yama is right for wrong reading Kobiinata-yama.

Hi SC, thanks for all the maps and GPS data you posted in the last day. I should add a map myself, but it seems you enjoy it as a hobby ;)

I love seeing maps, and my pleasure non-Japanese snowers can get Japanese topo maps with English locaton names where they want to go if it is worthy or not. It will take much much time that Japan Geographical Survey Institute provides English version of Japanese web top maps.
Ref. Current ver: see http://portal.cyberjapan.jp/index.html

When I was young, my hiking fellows used to tell "Do you carry a map and a compass ?" each other. This time it may be " Do you carry a GPS?" However, I believe maps with a compass have been a neccesary set of light weight compact mountain gear. (One advises to carry three compasses.)
In Japan as well in North America, most professional BC snow guides ask their clients they must have beacons, but never say if they have maps with compass. I do not know the reason why. Probably, guides believe that their clients can not survive when guides lost thier lives....