Horizontal Directional Drilling is a trenchless method used to install underground pipes, conduits, and cables with minimal surface disruption. It involves drilling a borehole at a predetermined angle from the surface and then gradually steering the drill bit to follow a specified path horizontally underground. HDD is commonly used for various applications, including installing utility lines beneath roads, rivers, and other obstacles. The process requires specialized equipment such as a drilling rig, drill stem, and tracking system to monitor the drilling progress and ensure accuracy. HDD offers several advantages, including reduced environmental impact, shorter construction times, and cost savings compared to traditional open-cut excavation methods. Additionally, it minimizes disruptions to existing infrastructure and reduces the need for restoration work after installation.