Light pollution is a modern scourge but a concerted effort to bring the darkness to Wales is under way – with the help of astronomy strolls led by experts wielding laser pens.

Light pollution is a modern scourge but a concerted effort to bring the darkness to Wales is under way – with the help of astronomy strolls led by experts wielding laser pens.

Light pollution is a modern scourge but a concerted effort to bring the darkness to Wales is under way – with the help of astronomy strolls led by experts wielding laser pens.

Light pollution is a modern scourge but a concerted effort to bring the darkness to Wales is under way – with the help of astronomy strolls led by experts wielding laser pens.

Light pollution is a modern scourge but a concerted effort to bring the darkness to Wales is under way – with the help of astronomy strolls led by experts wielding laser pens.

Light pollution is a modern scourge but a concerted effort to bring the darkness to Wales is under way – with the help of astronomy strolls led by experts wielding laser pens.

Light pollution is a modern scourge but a concerted effort to bring the darkness to Wales is under way – with the help of astronomy strolls led by experts wielding laser pens.

Light pollution is a modern scourge but a concerted effort to bring the darkness to Wales is under way – with the help of astronomy strolls led by experts wielding laser pens.

Light pollution is a modern scourge but a concerted effort to bring the darkness to Wales is under way – with the help of astronomy strolls led by experts wielding laser pens.

Light pollution is a modern scourge but a concerted effort to bring the darkness to Wales is under way – with the help of astronomy strolls led by experts wielding laser pens.

Light pollution is a modern scourge but a concerted effort to bring the darkness to Wales is under way – with the help of astronomy strolls led by experts wielding laser pens.

Light pollution is a modern scourge but a concerted effort to bring the darkness to Wales is under way – with the help of astronomy strolls led by experts wielding laser pens.

Light pollution is a modern scourge but a concerted effort to bring the darkness to Wales is under way – with the help of astronomy strolls led by experts wielding laser pens.

Light pollution is a modern scourge but a concerted effort to bring the darkness to Wales is under way – with the help of astronomy strolls led by experts wielding laser pens.

Light pollution is a modern scourge but a concerted effort to bring the darkness to Wales is under way – with the help of astronomy strolls led by experts wielding laser pens.