Payment for damage caused where another animal pushed this one into the Obstacle: Bava Kama 13a-b
Definition
"Obstacle Damage" refers to Damage which can[not] be expected via the damaging object, which is his personal property and is upon him to protect: Bava Kama 3b, 6a, 6b, 9b, 10a
Damage from an Obstacle for which an individual maintains ownership, and which he left in a public area, is liable either under the rules for Obstacles, or possibly under the Damages of Animals ["Shor"] - Goring, Eating, or Trampling: Bava Kama 3b, 6a
Liability exists even if the owner Renounced Ownership of the Object in a Public Area: Bava Kama 6a
For an Object which fell from a rooftop in an ordinary wind, responsibility is learned from Obstacles and Fire: Bava Kama 6a
For an Obstacle which is rolling in a Public Area, responsibility is learned from Obstacles and one of the sub-categories [Goring, Eating, Trampling] of Animal ["Shor"] Damage: Bava Kama 6a
Where cleaning out his Trap or Pit into a Public Area at a Permitted Time, and someone is hurt from the resultant stationary obstacle, Responsibility is learned from a combination of Obstacle Damages and Animal ["Shor"] Damage [Goring, Eating, Trampling]: Bava Kama 6a-b
If a Person's Wall or Tree fall into a public area, after he has been given ample warning, Responsibility is learned from Obstacle Damage and Animal ["Shor"] Damage [Goring, Eating, Trampling]: Bava Kama 6b
Liability for damage done to Invalid Offerings which were Redeemed: Bava Kama 10a
Off-shoots of Obstacle Damages
A person's rock, knife, or burden which he leaves in a public area: Bava Kama 3a
One's barrel which broke in the road: Bava Metzia 82b
One's camel which fell in the road: Bava Metzia 82b