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

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

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

Description: A 6x6 inch block of wood bouncing on a concrete floor.

Description: Several sizes of small wooden blocks dropped onto a wood floor.

Description: A 6x6 inch block of wood bouncing on a concrete floor.

Description: Several sizes of small wooden blocks dropped onto a wood floor.