Mammoth Cave

International Dark Sky Week 2023

A child stands next to a very large telescope.
Visitors can view deep sky objects and constellations through telescopes during International Dark Sky Week.

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Join us from April 15-22, 2023 for International Dark Sky week

Mammoth Cave National Park invites you to celebrate International Dark Sky Week with ranger guided walks, talks, and special evening programs.

What is International Dark Sky Week?

International Dark Sky Week (IDSW) is an annual event held during April's new moon, that encourages people worldwide to turn off lights and enjoy the night sky without light pollution. Founded in 2003 by high school student Jennifer Barlow, IDSW aims to reduce light pollution, promote better lighting systems, and encourage the study of astronomy.

Mammoth Cave National Park was recognized as an International Dark Sky Park by the International Dark-Sky Association (IDA) in 2021. The park is committed to preserve the night sky's beauty and share it with future generations.



Scheduled Events

During the IDSW programs visitors can view deep sky objects and constellations through telescopes, take a nighttime walk on a park trail to learn about nocturnal wildlife, and even get a closer look at our nearest star, the Sun. Most of the programs will take place in the evening hours but there will be two daytime events during the week at the visitor center.

All events are weather dependent and free and open to the public with no tickets or reservations required.


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Last updated: November 7, 2023

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Contact Info

Mailing Address:

P.O. Box 7
Mammoth Cave, KY 42259-0007


270 758-2180

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