Lodge and Learn on Higgins Lake as RAM Center opens After being closed for a year due to COVID-19, the Department of Natural Resources’ Ralph A. MacMullan Conference Center in Roscommon is reopening its doors to families, individuals or small groups of up to two households to “Lodge and Learn” with the center’s lodging and outdoor and education opportunities. The center is not yet open for conferences and large groups. With rustic lodging and modern meeting space, the Ralph A. MacMullan Conference Center – known as the RAM Center – combines the fun of summer camp with lodging and conference center facilities.