Expedition Island 755 Southpoint Blvd, Petaluma, CA94954 Expedition Island is an adventure center that's indoors. Opened in September 2010, it offers adults and kids…More a safe and fun experience. Rock climbing, zip-lines and rope courses are just a few of the challenges you'll encounter. This facility is family owned. Its unique tropical theme makes a great setting for birthday parties or group events. Free Wi-Fi and gift certificates are available.