The 92 annual Chincoteague pony penning is set for Wednesday.
Organizers say the wild ponies of Assateague Island will swim across to Chincoteague sometime between 6 a.m. and 8 a.m.
The event draws thousands of tourists each year and was memorialized in Marguerite Henry's novel "Misty of Chincoteague.''
An auction of a portion of the herd benefits the Chincoteague Volunteer Fire Department.
