Cross-country pipelines are long-distance pipelines that transport oil, natural gas, or other fluids over land, often across large distances and sometimes across multiple countries. These pipelines are typically used to transport oil or gas from production sites, such as oil fields or gas wells, to processing facilities, storage facilities, or to end-users like power plants or industrial facilities.

Cross-country pipelines can vary in size, but they are often several inches to several feet in diameter and can span hundreds or even thousands of miles. The pipelines are usually buried underground to protect them from damage and to minimize the impact on the surrounding environment.

The construction and operation of cross-country pipelines require significant planning, engineering, and environmental considerations to ensure their safety and minimize their impact on the surrounding areas. Maintenance and monitoring of these pipelines are also critical to prevent leaks, corrosion, and other potential issues that can cause safety hazards or environmental damage.