Whymper N col

Skied the N Col on Whymper today. Probed a fair bit in the lower section of the main run. Lowest HS we found was 150cm highest was 250cm. Average was around 170cm. HST increased dramatically with elevation and we were surprised to find up to 50cm of blower dry powder up high. Average HST was 35cm. Loose dry observed out of extreme terrain all day but snow seemed to be bonding well with no signs of slab formation due to the low density.