A remote steep road to Roof Butte in AZ

Roof Butte is a high mountain peak at an elevation of 2.996m (9,829ft) above the sea level, located in the Navajo Nation of Apache County, in northeast Arizona, in USA. It'sone of the highest roads of Arizona.

Roof Butte

Set high in the Chuska Mountains, which run along the Arizona and New Mexico border, the road to the summit is called Indian Route 30. The road is a moderately-rough dirt road that goes to the top. It’s mostly unpaved but smooth, and in dry conditions should be passable to most vehicles. High clearance would be the only minimum requirement. It’s impassable in winters. Its remoteness keeps visitation to a minimum.
At the summit there’s a lookout tower built in 1960. The road to the summit is very steep, hitting an 11% of maximum gradient through some of the ramps. Starting at Indian Route 13, the ascent is 6.59km (4.1 miles) long. Over this distance the elevation gain is 389 meters. The average gradient is 5.90%.
Pic&more info: http://www.surgent.net/highpoints/az/range/roofbutte.html