All About the Cas Cay Blowhole (A Don’t-Miss Photo Op!)

September 21, 2023
Two men are standing on rocks near the ocean taking a selfie.

You’ve snapped pics from the gondolas at Paradise Point, got a sweeping aerial from above Magen’s Bay, and have even taken pictures of iguanas in action, snacking on mangoes. But have you stood before the famous Cas Cay blow hole yet for an epic photo? Your St. Thomas trip isn’t complete without it – trust us.


Cas Cay is an uninhabited nature preserve just beyond the Mangrove Lagoon on St. Thomas. Our tours to the island are among our most popular, and for good reason. There’s so much to see and do, both above water in your kayak, and below with your snorkel gear. One of the highlights of this tour is the hike around the island, culminating at Red Point, which is where you will find the blowhole.


The Red Point Blow Hole is a geological marine geyser. Seawater is compressed between the rocks and shoots upward in a powerful blast. It’s this moment – often catching people by surprise – that makes the best photos. Here are some of our favorites from our guests:

A collage of photos of people standing on rocks near the ocean

The height and power of the blowhole is largely determined by the weather conditions; the tide and swell of the ocean will vary day to day. If the sea is churning a bit, you can definitely count on a bigger blast.


Here’s a cool video that gives you a peek into the tour, and shows the blowhole in action:

Join us for a tour on your next visit to St. Thomas. Or, if you’d prefer to explore on your own, we also rent kayaks for you to use to get you to Cas Cay.


We can’t wait for you to see the blowhole and capture some memories!

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