Remember that backyard tarp slip-n-slide your dad set up for you circa 2000?

You’ll find something similar on this underground route. Just hold the soapy water — and add a whole bunch of mud.

It’s survival of the squeeziest down here on Muddy Mayhem. The twists, turns, and tight passageways will work in your favor, as you plant your heels into the soft earth and feel the cool, rock walls underneath your fingertips.

Be sure to pack your sleeping gear. This muddy adventure will keep you underground ‘til morning.

You can walk a mile in someone else’s shoes or spend an entire evening in Aaron Higgenbotham’s — the cave’s first known explorer.

You’ll squeeze through tight passageways, feel the pop of the mud against your rubber sole on Bubblegum Alley, and traverse high-ladder climbs to places you’ve never seen before. But this nighttime adventure doesn’t stop there.

Much like Higgenbotham, you feel the cool earth beneath your back as you drift off and dream of the day’s high climbs and grand formations.

Pack a sleeping bag and some extra money for dinner — the cave will take care of the rest.

It’s a badge of honor—a grind for glory. And a daredevil’s holy grail. This is the (sunken) peak of all adventure—the time where your courage is both tested and rewarded with sights so spectacular yet magnificently rare.

Tenacious cavers on our Into the Dark Overnight Adventure will scale underground canyons, cross Devil’s Quarry, and climb a high wind to The Monument Pillar — a formation known by many but witnessed by few.

When it’s all said and done, you’ll march on into the dark. And rest beside other brave cavers to hum the tune of a warrior’s lullaby, knowing you put in a hard day’s adventure.

This is the night where everything is tested: Your courage, your strength, and most importantly, your trust in the cave.

Lights Out is the overnight adventure that, physically, requires the best of you. But the rewards wonder and awe are far worth completing the challenge.

From The Great Extension, the Monument Pillar, and the Blue Mud Mountain, to the Rock of Ages and undiscovered passages, this is the night you’ll learn most about the cave — and even yourself.

You’ll understand the need for a cave campout when it’s all said and done. Because after you make this tiring journey, driving home just won’t feel like an option.