A dead fall snare is just a heavy object that falls when triggered by the triggering mechanism (in this case, a stick!).
Step 1: Materials
1. 1 x long sturdy stick (10 inches)
2. 1 x heavy rock (or log)
3. 3 x similarly sized sticks (9 inches)
Step 2: Location, location, location.
Then place your trigger stick in front of the sloped stick a few inches off the ground.
When the animal walks or runs along the path it is 'funnelled' towards the trigger stick, when it stands on or walks into the stick the sloped stick will move and the rock will fall onto the animal.