From publisher blurb:
Roadblock is a fully detailed random encounter designed for a typical group of 7th-9th level adventurers. While traveling through the wilderness, the heroes encounter a massive dinosaur carcass blocking their way. There are other travelers held up by the roadblock as well, and they look to the heroes for help. Unfortunately, the carcass is massive, there is a monster lurking inside it, and it is lying on the edge of a cliff. As the heroes confront the monster, chaos breaks out among the NPCs, doubling the heroes' difficulties. This encounter includes maps of the local area, d20 statistics for an advanced otyugh, and rules for the very dangerous environment the characters will have to fight in. Like all supplements in this series, this PDF includes information on. the background and terrain effects of the encounter, the monster's tactics, and possible ways for the heroes to gain bonus experience points from this encounter.