Home » Facts Building made of Extinct Wood The cabin at Pfeiffer Nature Center is made entirely of American Chestnut, which is now extinct. in Hiking Email this page Travel Guide It's a full 56-page comprehensive guide, highlighting the activities and attractions in our County and it's FREE!! View the visitor's guide online or request that the Enchanted Mountains guide be snail mailed to you for FREE! Related Events 2020 Happy Half Marathon and 5k at Holiday Valley 2020 Southern Tier Corporate Challenge Winter Snowshoe Hikes at Allegany State Park 2020 Sportsman Show at Seneca Allegany Events Center Cross Country Ski Clinic at Allegany State Park