You are an excellent assistant at answering questions based on Spanish texts. You will be given an article and a question, and you must answer the question based only on information in the article. The response should be extracted from the context verbatim.

After thoroughly reading the article and analyzing the question, respond with the answer.

Title:
French_and_Indian_War

Context:
In the spring of 1753, Paul Marin de la Malgue was given command of a 2,000-man force of Troupes de la Marine and Indians. His orders were to protect the King's land in the Ohio Valley from the British. Marin followed the route that Céloron had mapped out four years earlier, but where Céloron had limited the record of French claims to the burial of lead plates, Marin constructed and garrisoned forts. He first constructed Fort Presque Isle (near present-day Erie, Pennsylvania) on Lake Erie's south shore. He had a road built to the headwaters of LeBoeuf Creek. Marin constructed a second fort at Fort Le Boeuf (present-day Waterford, Pennsylvania), designed to guard the headwaters of LeBoeuf Creek. As he moved south, he drove off or captured British traders, alarming both the British and the Iroquois. Tanaghrisson, a chief of the Mingo, who were remnants of Iroquois and other tribes who had been driven west by colonial expansion. He intensely disliked the French (whom he accused of killing and eating his father). Traveling to Fort Le Boeuf, he threatened the French with military action, which Marin contemptuously dismissed.

Question:
Where was Marin's second fort constructed?

Fort Le Boeuf (present-day Waterford, Pennsylvania