Home » Videos Get tickets for the 2015 MudSlide! June 20, 2015 join us for the 4th annual Holiday Valley Mudslide at 10am! For more info visit: HolidayValley.com/mudslide Tagged in Summer Adventure mud run Adventure Seekers Ellicottville Login to post comments 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 Cash and Cline- Together Again @ The Seneca Allegany Resort and Casino Cash and Cline- Together Again @ The Seneca Allegany Resort and Casino Cash and Cline- Together Again @ The Seneca Allegany Resort and Casino 2022 Sportsman Show at Seneca Allegany Events Center 2022 Sportsman Show at Seneca Allegany Events Center