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Road chapter
Firehole Lake Drive to Grand Prismatic Boardwalk
Take Grand Loop Road. The plan carries 5 minutes of road-delay buffer here.
Drive
8min
Buffer
+5min
Distance
Distance varies
Buffers model road and construction delays only. Parking time is carried by the destination stop.
Narration
Hydrothermal change
Watch for
- Fairy Falls parking signs
- Midway congestion
- No roadside parking zones
Arrival cue
The signed Midway Geyser Basin lot serves the Grand Prismatic boardwalk.
Passenger reads this
- Biscuit Basin remains closed; do not attempt access.
- Park only in legal marked areas.
- Stay on designated trails in all thermal terrain.
Road facts
- Biscuit Basin event
- Hydrothermal explosion on July 23, 2024; not volcanic unrest
- Current closure
- Biscuit Basin closure remains in place in 2026
Content checked 2026-07-26verified confidence
Arriving atGrand Prismatic Boardwalk