A bog is a wet land, but this wetland is a very deceptive place. Although it can look (and sometimes feel) like land (perhaps with some small ponds or pools of water dotting the land, as well); in fact, it is more like a spongy "floating carpet" of land. Underneath the surface, the bog is full of water--about 90-95% water.

Raised bogs develop from valley mires where the rainfall is over 1 meter per year. Here peat (which is decaying plants) builds up until it is above the ground water table. The biggest may spread over hundreds of hectares and can be 6-9 meters higher in the centre than at the edge.

A raised bog may grow a millimeter in one year's time!

Sometimes, as people cut peat in bogs, they found things that had been placed there long ago. They found wonderful objects--necklaces, swords, or even silver cauldrons. And sometimes they found the gruesome, preserved remains of human beings: men, women, and children.

Although no mummies have been found in the glenullin bog... YET!