Underground warning tape is the last line of defense for your underground utility. Underground tape helps prevent accidental dig-ins that result in loss of revenue, repair expense, or damage to life and property. It alerts workers of buried cables, pipes, and utilities buried below. Empire® 71-070 Duratec® Reinforced Non-Detectable Underground Tape, GAS LINE BURIED BELOW Legend, Yellow, 3 in x 1,000 ft