Sandstone (44)

• Hug Point
• Needles District of Canyonlands National Park
• Khajuraho Group of Monuments
• Patrick's Point State Park
• Scenic Byway 279 Petroglyphs
• Seneca Aqueduct in the C&O Canal National Historic Park
• Seneca Quarry in Seneca Creek State Park
• Red Rock Canyon National Conservation Area
• Joes Valley Reservoir