Description: A small thin piece of slate dropped from a short distance onto a solid rock surface.

Description: A small thin piece of slate dropped from a short distance onto a solid rock surface.

Description: impact, rock, concrete, hit, drop, bang

Description: A crack from a 2-3 inch diameter dry seasoned maple wood tree branch by a high velocity impact from a 30 pound rock.

Description: A crack from a 2-3 inch diameter dry seasoned maple wood tree branch by a high velocity impact from a 30 pound rock.

Description: A crack from a 2-3 inch diameter dry seasoned maple wood tree branch by a high velocity impact from a 30 pound rock.

Description: A crack from a 2-3 inch diameter dry seasoned maple wood tree branch by a high velocity impact from a 30 pound rock.

Description: A crack from a 2-3 inch diameter dry seasoned maple wood tree branch by a high velocity impact from a 30 pound rock.

Description: A large handful of 1/2 to 1 inch diameter white pine sticks dropped onto a rock.

Description: A large handful of 1 inch diameter white pine sticks dropped onto a wood plank deck.