Why did Erwin Rommel’s forces take up a defensive position called the Cauldron in 1942?

In May 1942, Erwin Rommel launched an offensive by maneuvering his forces around the southern flank of the British Gazala–Bir Hakeim line. However, he failed to break through to the coast to envelop the British forces as intended, and his tank units suffered significant losses against British armor, including newly deployed M3 General Grant tanks.12

Following an unsuccessful second attempt to reach the coast on May 28, Rommel decided on May 29, 1942, to establish a defensive position known as the "Cauldron." This position was initially precarious, as it left his forces separated from the rest of his army by British minefields and garrisons. Despite being subjected to heavy air and ground attacks, Rommel held the position while securing his supply lines by overwhelming isolated British units. The British eventually exhausted their armored reserves through repeated, ineffective assaults on the Cauldron, allowing Rommel to strike eastward on June 11 and decisively defeat the remaining British armor.12