The original camp (known as the old camp) was surrounded by the barbed-wire fence. It comprised eight barracks for the inmates and a "Kommandantur" for the SS guards, totaling 120,000 m2. In 1943, the camp was enlarged and a new camp was constructed alongside the earlier one. It was also surrounded by electrified barbed-wire fence and contained thirty new barracks, raising the total area to 1.2 km2 (0.5 sq mi). A crematorium and gas chamber were added in 1943, just in time to start mass executions when Stutthof was included in the "Final Solution" in June 1944. Mobile gas wagons were also used to complement the maximum capacity of the gas chamber (150 people per execution) when needed.