These are evidently wood boring beetles of some type recorded 12:30 am at Misty Lake.  Faint Bullfrogs can hear in the distance, there were active mice or shews in the immediate area as well.Tim River photo

Jecklin, DPA 4006,SD 744tCreative Commons License

Wood boring beetles, Algonquin Provincial Park, Canada, Jecklin, DPA 4006,SD 744