They reached the top of the buttress on 27 August and continued over Pobeda West ( 6918m ) .
On the route they encountered very hard ice and a shattered band of yellow rock with thin ice , both of which made for slow progress .
both reached the top of the buttress on 27 August and continued over Pobeda West ( 6918m ) .
On the route they encountered very hard ice and a shattered band of yellow rock with thin ice , both of which made for slow progress .