ADAMS — When Sperry Road Campground reopens on May 22 for the first time in several years, campers will have their choice of three solar-powered flush toilets.

Each cost $122,000 and will have sinks with warm water.

The campground has been closed while the road was fixed and the plumbing was run for the toilets.

It has 18 tent sites, nine group sites, picnic tables and fire rings, and bear-proof storage lockers.

The reservation has five lean-to shelters as well.

Renovations totaled $714,000: $366,000 for the bathrooms and $348,000 for the roadwork.

More work is planned at Mount Greylock State Reservation this spring, with repairs planned at three shelter: Stoney Ledge, at a cost of $43,992; Upper, at a cost of $42,383, and Chimney, at a cost of $23,340.

Lower down, new air conditioning is being installed at the Mount Greylock Visitor Center.

Heather Linscott, chair of the Mount Greylock Advisory Council, said she’s hoping to help the state Department of Conservation and Recreation replace the Deer Hill Shelter privy, which is full, with a moldering privy — a back country outhouse that decomposes human waste using aerobic conditions and wood shavings.

DCR is also exploring adding moldering privies at Pecks Brook and Bellows Pipe shelters.

At shelters without privies, or in cases when privies are full, campers are expected to dig cat holes to do their business. That’s a delicate operation that involves digging a hole at least 6 inches deep and covering the waste carefully.

“And if you don’t do it right, animals will come and dig it up,” Linscott said.