After passing under I-95 and intersecting Principio Road in the valley of Mill Creek, MD 824 curves to the west toward its northern terminus at a four-way intersection with MD 222 and MD 275.
The passage describes the route of MD 824 as it travels through a specific location in Maryland, including its path under I-95, intersection with Principio Road, and final destination at a four-way intersection with MD 222 and MD 275.