West Maui
Blowhole on the wild north-west tip of Maui, a short steep walk down from the roadside lot at mile 38.5. Stay well back from the hole — it has taken lives. Part of her west-coast day with the Olivine Pools and Nāpili.
No booking, free. Park in the dirt pull-off on Honoapiʻilani Highway near mile marker 38.5 and walk down the rough path; no facilities.