Welcome to Camp Sundown


The Xeroderma Pigmentosum Society

Celebrating 25 years of Empowering People with UV-Sensitivty

Research for Students


What is XP? How does it affect people? Imagine that you had to put on a hooded jacket, gloves, faceshield and hat every time you went outside to keep the sun from blistering your skin. XP is a rare disease that exhibits extreme light sensitivity and puts patients at great risk for hundreds of skin and eye cancers cancers. Learn  more.

Camp Sundown


Camp Sundown began in 1995 as one family's dream to give their daughter a "normal" childhood camp experience. It has grown into an annual gathering of XP kids, a foundation for their families and leading researchers to share experiences, build friendships and learn from each other. A camp for the "Children of the Night." Learn more.



The Xeroderma Pigmentosum Society runs a number of programs including education, fundraising, and outreach to benefit those affected by XP around the world. This non-profit foundation has no paid staff positions, benefiting from the generosity of volunteers and donors. There are many ways to get involved. Learn more.



News stories have helped to educate about XP. People affected by extreme sun sensitivity look just like everyone else, until blisters or freckles, cancers begin to appear. Parents don't know why their baby cries when they go outside. Children don't understand why the sun burns so painfully. We hope through more stories like these and work through the Xp Society, there will be a greater understanding and awareness about XP. Read more.

About Us


The Xeroderma Pigmentosum Society was founded in 1995 by Dan and Caren Mahar. The XP Society has grown to become the international authority for XP family support and provides information to help families make intelligent decisions in caregiving of UV-sensitive people. Through the generous donations of time, talent and financial contributions, the XP Society is proud to offer Camp Sundown, the unique to the world night camp program and family retreat free of charge to XP patients and their families. Get involved.   

What's New?

Anytime Shopping

Tim McCormack Memorial Golf Ball Drop for Camp Sundown

Thank you all for participating in our fifth annual Golf Ball Drop at Copake Country Club. What a beautiful fall day to commemorate our first pilot and friend to Camp Sundown, Tim McCormack who tragically lost his life earlier this year. If you were not able to join us, the numbers are posted here. We have also reached out to all winners in order to facilitate prompt delivery of your prizes.

Winning Ball Drop Numbers:

851 771 551  868  768  604  754  258  899  288 16  31  777  725  343  837  496  344

We also want to thank all those who showed up on Saturday to support through person and purchasing of 50/50 and raffle prize tickets. Your generous support helps keep Camp Sundown running. Special thanks to Frank Zacarolli, ticket sellers, and volunteers Joan, Brad and Danny. Photos courtesy of Joan Goldhammer.  

Harvest Moon Camp

was a wonderful event! A relaxing long weekend to enjoy with friends learning new games like spot-it, swimming, showing off the new shirts, painting pumpkins and making creepy hands, visiting the Davenport Farm, eating fun, great meals, and making secret huddles to plot the Thriller show. We had visits from Dr. Moy, Dr. Ellen, and Dr. Hillary. Last campfires and songs of the year, big hugs and laughter. Thank you to our donors, sponsors, volunteers and camper families willing to travel so far.  

Camp Sundown 2019

Camp Sundown 2019

Week One on Video by Camper Cassidy Clark

Contact us: 
  • Wix Facebook page

Xeroderma Pigmentosum Society, Inc.

437 Snydertown Road

Craryville, NY 12521, USA


Telephone: (518) 929-2174


Email: xps@xps.org

The 2019 XP REPORT is here! Please let us know if you would like a copy mailed to you.

Camp Sundown 2020

Session One:  July 6-10 FULL

Session Two:  July 13-17 FULL

Registrations available here  for new and returning camper families.