Wadi Al-Rummah is the longest valley in Saudi Arabia, stretching approximately 600 kilometers. It runs from the Al-Nafud Desert in the north to the Arabian Gulf in the east. This valley is significant for its unique geological features and diverse ecosystems, supporting various plant and animal species. The valley is also known for its historical importance, as it has been a vital route for trade and migration for centuries. Its rich soil and water sources make it suitable for agriculture, contributing to the livelihoods of local communities.