Israel is building a massive wall along its northern border, saying the barrier is needed to protect civilians from Hezbollah attacks, but the project has raised tensions with Lebanon, which fears the fence will encroach on its territory, AP reported.

Brig. Gen. Eran Ofir, the commander in charge of Israel’s border wall projects, said around seven miles of the 80-mile (130-kilometer) barrier has been built. The $450 million project is slated for completion in two years. Most of the barrier is a concrete wall topped by steel mesh, sensors and surveillance cameras. Steel fencing replaces the concrete wall in especially rugged areas.