The high-riding, 49-passenger Lavaone gets you close enough to feel the lava's heat – assuming it's flowing. Well-narrated tours motor from Isaac Hale Beach Park to the sea entry near Kalapana. Operators try to give every covered seat a clear view while zig-zagging in front of the lava for 30 minutes. Twilight tours are otherworldly. Warning: you may get seasick.