The Welsh population is confined to the north - facing slopes of Snowdonia , where climatic conditions are apparently similar to ice age Europe .
In botany , an example of an ice age relict plant population is the Snowdon lily , notable as being precariously rare in Wales .
The Wales population is confined to the north - facing slopes of Snowdonia , where climatic conditions are apparently similar to ice age Europe .
In botany , an example of an ice age relict plant population is the Snowdon lily , notable as being precariously rare in Wales .