 They apparently had no food, but they did have a supply of drinkable water in the form of moisture dripping from the cave walls. It was dark, but they had their torches, and there was enough air for a while because of the porous limestone and cracks in the rocks, which meant air could come through. They had the right conditions to survive, at least for a little while, and most importantly, the wild boars had another. The wild boars had one another, I should say. Now came the hardest bit, hoping for rescue.