National Geographic
Happy Hour

Nat Geo Nights: Into the Underworld

October 18, 2018, 5:30 PM - 8:30 PM
Happy Hour

Nat Geo Nights: Into the Underworld

October 18, 2018, 5:30 PM - 8:30 PM

Photograph by Robbie Shone

About this Event

Enter the hidden world inside caves with National Geographic Explorers. Discover how Guillermo de Anda found the remains of our human ancestors buried deep underground, and learn what mysterious creatures call these dark spaces home with Ingi Agnarsson and Daniela Cafaggi.



Every month National Geographic opens its doors for a night of fun and exploration. These special monthly happy hours feature live stories from National Geographic Explorers, fun interactive activities, lively music, food, and drink specials at our cash bar. See the event schedule and full lineup below.

The happy hour begins at 5:30 p.m. and the talk begins at 6:30 p.m.

  • Gilbert H. Grosvenor Auditorium

    National Geographic Campus


Photograph by Guillermo Pruneda

Guillermo de Anda


Underwater archaeologist and National Geographic Explorer GUILLERMO DE ANDA, Ph.D., has studied caves and cenotes, or sinkholes, through the lenses of Maya civilization and the Pleistocene for over 30 years. He is a researcher at the Instituto Nacional de Antropología e Historia (INAH) in Mexico City, where he is in charge of special projects in underwater archaeology. He also directs the archaeological initiatives Quest for the Ancestral Water Sources and the Grand Maya Aquifer Project. He was formerly a professor and researcher at the School of Anthropological Sciences at the Autonomous University of Yucatán, where he founded the underwater archaeology department. Guillermo specializes in the study of mortuary and funeral rituals in caves and cenotes, and in 2007 received the physical anthropology Javier Romero Molina award for his forensic analysis of the human bones extracted from Chichén Itzá’s cenote.

Ingi Agnarsson


Arachnologist, evolutionary biologist, and National Geographic Explorer INGI AGNARSSON studies spider diversity and evolution and uses molecular tools to help scientists understand the origin, evolution, and wealth of biodiversity. He currently focuses on arachnids from the hot and dark bat-filled caves of the Caribbean. Ingi has completed over 30 expeditions in over 60 countries on all five continents to discover new spiders and the amazing things they do. He received a Top 10 New Species award from the International Institute for Species Exploration for his discovery of Darwin’s bark spider, which spins the planet’s toughest known biomaterial. Ingi aims to conduct a thorough inventory of caves in the Caribbean, of which there are many thousands. Each houses its own isolated world of unique life, yet only a few dozen of them have ever been biologically explored.

Photograph courtesy of Ingi Agnarsson

Photograph by Jessica Rangel

Daniela Cafaggi


Biologist and National Geographic Explorer DANIELA CAFAGGI works at the Laboratory of Ecology and Conservation of Terrestrial Vertebrates at the National Autonomous University of Mexico and is a scientific illustrator for botanical gardens, museums, nonprofits, and scientific institutes. She is currently leading a project that seeks to identify the species of bats in Chichén Itzá, Dzibilchaltún, Ek Balam, and Uxmal. She and her team have identified over 20 species and founded several bat refuges. She is also creating a proposal for an environmental diffusion program focused on promoting coexistence between humans and bats and highlighting the historical and ecological importance of bats in the ancient and current Maya culture. She recently carried out BioBlitz and National Geographic Photo Ark Challenge events in the Maya community of Ek Balam in Yucatán, Mexico, with elementary and middle school students.

 is part of

Nat Geo Nights

Monthly on the Third Thursday

Plan Your Visit


Tickets to evening and weekend National Geographic live events in D.C. include free parking in our underground garage, located on M Street between 16th and 17th Streets NW. You must show proof of purchase to access the garage. Parking opens one hour before the event start time. For Nat Geo Nights events, parking opens at 5:00 P.M.

Parking is not available for museum or 3D film ticket holders. For museum ticket holders looking to park near the museum, Parking Panda or SpotHero can help you find parking nearby.


The League of American Bicyclists has named National Geographic a silver Bicycle Friendly Business. For evening and weekend events, bicycle parking is available on level P-1 of the garage and at bike racks on M Street. For weekday daytime events, parking is available only at the bike racks located on M Street.


Driving Directions

National Geographic headquarters is located at 17th and M Streets, NW. The museum and store entrance is at 1145 17th Street; the Grosvenor Auditorium entrance is at 1600 M Street NW.



National Geographic is committed to promoting the use of sustainable transportation as a way to reduce local traffic congestion and air pollution. Please consider some of the District’s alternative transportation options:

By MetroRail

National Geographic is located a few blocks from the Farragut North Metro Station on the Metro’s Red Line. From the L Street Metro exit, head east on L Street toward 17th Street. Make a left on 17th Street. The museum will be on the right. Alternatively, take the Blue, Orange, or Silver Line to Farragut West. Exit the station at 17th Street NW, make a right out of the metro, turn left on 17th Street, and walk two blocks. The museum will be on the right. Visit the Metro website for more station information.

By MetroBus

A dozen MetroBus routes have stops located within a 1/4 mile of National Geographic, including the D1/3/5/6, N2/4/6, and the 42. To find the route closest to you, visit the Metro website.

By DC Circulator

The DC Circulator has one stop within walking distance of National Geographic. The Georgetown-Union Station route has a stop on K Street and Connecticut Avenue. From there, walk east on K Street and turn left on 17th Street. Walk one and a half more blocks and the museum will be on the right. For more information, visit

Capital Bikeshare

The District’s bike-sharing program makes bicycles available to anyone. Simply take a bike from one of over 115 stations in D.C. and Arlington, and return it to a docking station close to the museum. The closest docking stations to the museum are located at K and 17th Streets and 17th Street and Rhode Island Avenue. For more information about fees and station locations, visit:


A wheelchair ramp is located on the M Street side of the museum’s main building. Automatic doors are on the 17th Street side. Wheelchairs are available at the ticket desk on a first-come, first-serve basis.

Please call the National Geographic Ticket Office at 202-857-7700 at least two weeks prior to your visit to request sign language interpretation, captioning, or hearing assistance devices.

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