Ice Axe Raven Pro. Black Diamond Raven Pro, their technical mountaineering axe is now lighter and features a slightly angled and ergonomically improved trapezoidal shaft for better grip and more aggressive climbing.. The updated pick, adze and spike geometry allows for more secure placements, whether you're kicking steps up Aconcagua or winding through crevasse fields in the Alps, while the investment-cast, polished stainless-steel head provides dependable durability.