Sunset Lake

Yes; the ground around hot springs is fragile and the water is extremely hot. Staying on the boardwalk protects both you and the feature.

Yes; the short boardwalk yields vivid colors and a clear display of Yellowstone's hydrothermal plumbing, especially during golden hour.

Dogs are not allowed on hydrothermal boardwalks. Leave pets at a designated area and explore the rest of the park instead.

The blue hue comes from the depth and mineral content (rock flour and microorganisms); the center reads blue in person, especially when steam is light.

Yes; the Black Sand Basin boardwalks are designed for accessibility, but some segments may be uneven. Plan for a slower pace and start at the accessible sections.