Culvert

Due to being completely blocked by trees, this culvert is a serious hazard. Significant flow leads toward the snags, so utmost care and control are needed to avoid disaster. (The 'class IV' rating is primarily to point out the danger of taking this too lightly. IF the trees were ever removed, this would be nothing more than a swiftwater lead-in and an easy hole to punch coming out of the culvert -- maybe class II.) Portage (usually on the right), then check for how playable the hole formed by the outflow from the culvert is.