Law's Spring is a rare perennial water source in the high ponderosa country south of the Grand Canyon. Native Americans knew it long before any wagon rolled through. Petroglyphs still mark the basalt walls around the tank. For a few decades in the mid-1800s, it became a critical stop along the Beale Wagon Road, and someone carved the spring's name into the rock with the skill of a professional engraver. Who did it remains a mystery. The inscription is still crisp after more than 160 years.