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North Coast of Puerto Rico from San Juan: Arecibo Observatory and Cueva del Indio

Isla Verde, Caribbean
Book online or call: (888) 651-9785(888) 651-9785

From US$111.25

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5 to 7 hours (Approx.)
Hotel pickup offered
Mobile ticket
Offered in: English


This full-day tour allows you to explore Arecibo Observatory, and relax on a black magnetic sand beach. Skip the hassle of renting a car to explore these landmarks and highlights, including Cueva del Indio, with convenient pickup and drop-off at your San Juan hotel.
  • Full-day tour to Arecibo Observatory, and Cueva del Indio from San Juan
  • Guided tour of the world's largest radio telescope
  • View petroglyphs at Cueva del Indo
  • Explore a black magnetic sand beach
  • Pickup and drop-off from San Juan hotels
Following convenient pickup around 8am at your San Juan accommodation, board a comfortable tour vehicle headed west for a Puerto Rican town. 

Back in your tour vehicle, head for the town of Arecibo, where you'll visit the Arecibo Observatory. Take a guided tour of the biggest radio telescope on earth and view a documentary about the telescope and its construction. Departing the observatory, stop for a traditional Puerto Rican lunch at a local spot (own expense). 

Visit Cueva del Indio, a sea cave decorated with petroglyphs crated by the island's original inhabitants, the Taino Indians. Then visit a black magnetic sand beach to relax, walk in the ocean, and snap photos of this natural phenomenon. 

Return to your San Juan accommodation for drop-off at the end of your tour.

Traveler Photos


36 Reviews
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Reviews by Viator travelers
Beautiful views!
, Jun 2019
Spectacular views great tour guides! Definitely recommended as a must see in Puerto Rico. The local lunch restaurant we went to was yummy and inexpensive.
Very enjoyable!
, May 2019
Fantastic day trip with our tour guide Angel! We really enjoyed the opportunity to climb the cliffs and look out over the ocean at Cueva del Indio plus the magnetic sand beach was wild! Arecibo was great as well - we recommend the VIP tour, you got to go into the control room and get a little closer to the dish. Time well spent for sure!
Great Tour
, May 2019
This was a pilgrimage for me to the giant radio telescope featured in Carl Sagan’s great story (and Robert Zemeckis’ film), Contact. The tour did not disappoint. Afterward we went to an area with coastal caves and arches. It turned out to be more interesting than expected. Our guide was friendly and had a great personality. Very cool all the way around.
Arecibo Observatory and Cueva del Indio
Michelle L
, Mar 2019
Angel was a great guide! He made sure we had a very enjoyable day. He pointed out points of interest along the way. Cueva del Indio was very beautiful. The lava rock formations with the caves and Crystal Caribbean waters make for great pictures. We definitely will do this again!
Thank you!
, Mar 2019
The best tour in Puerto Rico!excellent service, great communication, all our questions answered in professional and friendly manner and very very entertaining and helpful guide!Many thanks! Natasha and Aldis
Educational and adventurous
, Dec 2018
Angel was on time and full of local knowledge/interesting information. He has a boisterous, fun-loving personality and is a fantastic guide. The ride from San Juan to Arecibo was beautiful. The Arecibo observatory was educational and practically empty! Cueva del Indio is not to be missed but you MUST be physically capable of climbing steep, uneven rocks. That was the highlight of the tour for us: Beyond breathtaking. Black magnetic sand beach was really cool too. Thx for a once in a lifetime day!
This tour was the highlight of our...
, Aug 2017
This tour was the highlight of our trip to San Juan. Our guide Angel was great and made it feel like we were traveling with a friend. He knew all the locals at each stop and took good care of us. Cave tour was definitely unique. Very different from others toured in KY and AZ. The Observatory was something my husband has always wanted to visit. The coastal stop was so beautiful. The stop for lunch was exactly what we had been hoping for to try local authentic food. Even with rain cancelling out our last stop on the black sand beach, we had a thoroughly enjoyable trip and would definitely recommend as the best tour and at a great value.
Angel and his wife love PR and it...
celia r
, Aug 2017
Angel and his wife love PR and it shows. They run a friendly and profesional tour that made our trip the best ever. Angel is passionate to show his Island. He wants you to love it as much as he does. They provided us with fresh fruit, traditional ice treats and the best meal we had. GO now!
This tour was absolutely incredible...
Zachary N
, Aug 2017
This tour was absolutely incredible. It was the absolute highlight of our vacation in Puerto Rico. Angel and his family were so wonderful and went WAY above and beyond all our expectations. The Caverns was what we originally signed up for this tour to see, but I'm SO glad we picked this tour over others that also went to the Caverns for a few reasons: 1. The other three locations we went to were breathtaking and most tour groups do not take you to all three, if we hadn't signed up for this tour we wouldn't have even known about the last two! 2. Angel and his family showed us the real Puerto Rican experience by taking us to a delicious and cheap! place for lunch and he even would stop along the road at various vendors to get us fruit and treats native to the area which was so cool and would never happen with the bigger tour groups. 3. This tour was small, intimate and I felt like I really connected with the other tour goers and with Angel, his wife and his daughter. I learned so much and had a great time. All in all, this tour was by far the best experience we had in PR, don't leave without going on a tour with Angel!!!
Angel is the real deal. He showed us a...
Kenneth N
, Aug 2017
Angel is the real deal. He showed us a great time in the real Puerto Rico.

Product code: 31523P1

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