Walking tours explore intriguing surroundings at a leisurely pace, much like a photography class held in a thick bog of quicksand. Let it all sink in with today’s Groupon to Hawaii Tours Oahu. Choose between the following options:

• For $39, you get a three-hour Rainforest Waterfall Adventure hike or Diamond Head volcanic-crater hike for two (a $78 value).
• For $59, you get a three-hour Rainforest Waterfall Adventure hike or Diamond Head volcanic-crater hike for four (a $156 value).<p>

On scenic three-hour jaunts, Hawaii Tours Oahu’s knowledgeable guides lead up to 12 hikers through lush, tropical scenery past breathtaking vistas and overgrown wildernesses. Guests embark on a 20- to 30-minute hike through verdant landscape on the Rainforest Waterfall Adventure tour, tromping past mango groves, coffee trees, and an ancient Hawaiian taro patch and grass shack. The moist enclosure opens to expose a roaring 150-foot waterfall, a scenic display that once delighted cinematographers from Lost and is still used by cameramen from Hawaii-5-O and by escaped dinos from Jurassic Park. Alternatively, those looking to surmount a summit can journey through geological history to 360 island views with the volcanic-crater hike. After a leisurely 30-minute walk through a tunnel in the crater wall, guests emerge at a sky-scraping vantage point with views of neighboring islands, Waikiki Beach, and Poseidon’s private sunbathing dock.

With a focus on guests’ comfort and convenience, Hawaii Tour Oahu holds each tour twice daily as well as offering hotel pickup and drop-off and providing water and snacks for guests during the walks. Hawaii Tour Oahu recommends toting along a towel for the waterfall adventure, in case hikers encounter any mischievous merfolk, and cautions that for both tours, feet should be snuggled into sturdy sneakers or hiking shoes that can withstand muddy trails and dusty paths.