Highland Fling

Take a standing jump to the top of the square stone pillar to the right of the ramp. Turn right.

Take a running jump to the right side of the next pillar with the purple flowers growing on it. Avoid the left side, which is too slippery to stand on. A crow flies in and tries to knock Lara off the pillar, so kill it quickly.

Look out over the mud pool and notice the coat of arms painted on the right wall (circled in the screenshot above). Take a running jump along the right side of the purple flowered pillar to land near the coat of arms.

Wade through the mud, aiming for the opening below the coat of arms.