Go behind the scenes with Monster Jam preparations at the PPL Center (PHOTOS) - lehighvalleylive.com
Monster Jam is Coming to PPL Center THIS Weekend! | Ingredients for Monster Jam: Just. Add. DIRT. The Monster Jam Triple Threat Series roars inside PPL Center beginning tomorrow, Feb. 21 through
![PPL Center on Twitter: "#Allentown, are you ready for #MonsterJam?! The wheelie contest is underway! #mymonsterjam http://t.co/haBxX5H1Lq" / Twitter PPL Center on Twitter: "#Allentown, are you ready for #MonsterJam?! The wheelie contest is underway! #mymonsterjam http://t.co/haBxX5H1Lq" / Twitter](https://pbs.twimg.com/media/CAA_OEqWsAACibe.jpg)