The wood in Monarch Plank’s Alpine Riftsawn Collection is Riftsawn to yield an elegant, straight-grained appearance that is at once more beautiful and more dimensionally stable than traditional plainsawn wood. This clean, linear look is perfectly suited to today’s modern design aesthetic, and is virtually free of knots. Alpine Ash is a wood from Tasmania that is sometimes also referred to as Tasmanian Oak. In truth, it is neither Ash nor Oak, but rather a species of Eucalyptus. It is the same hardness as European Oak. Alpine Ash is a wood from Tasmania that is sometimes also referred to as Tasmanian Oak. In truth, it is neither Ash nor Oak, but rather a species of Eucalyptus. It is the same hardness as European Oak