Tuesday May 10 2011 comments Clarksville Day 2011 By: Telegraph photography by Dan Zahra -A +A Dan Zahra ? The Telegraphdan zahra ? the TelegraphPony Express rider Cassey Holbrook dashes off on her mount during a demonstration Saturday at the Clarksville Day celebration in El Dorado Hills. Dan Zahra ? The TelegraphLocals cover their ears as the Mormon Battalion fired off their replica cannon during Clarksville Day, May 7, in El Dorado Hills. Dan Zahra / The TelegraphThe large percheron equine team was a massive sight to see during Saturday?s Clarksville Day Celebration. Dan Zahra / The TelegraphEmma Stevens, 7, of El Dorado Hills, tries her hand at gold panning during Clarksville Day, May 7. Dan Zahra / The TelegraphJeff Shinn, of Shinn Ranch Percherons, held the reins Saturday on his team of percherons as he carted visitors to the Clarksville celebration.