How were the British able to move thir troops up the steep cliffs near the city?

The British were able to move their troops up the steep cliffs near the city during the Siege of Gibraltar by using a combination of careful planning, engineering, and surprise. They constructed a system of ladders and ropes to facilitate the ascent, while taking advantage of the element of surprise to catch the defenders off guard. Additionally, they used artillery to suppress enemy fire, allowing their forces to scale the cliffs more safely and effectively. This strategy ultimately contributed to their success in the campaign.