Solinus, the 3rd century CE author of Collectanea Rerum Memorabilium, a descriptive book about places, wrote of Britain “...there are many great rivers and hot springs richly adorned for the use of men. Over these springs the Minerva is patron goddess and in her temple the eternal flames never whiten into ash, but when the flame declines it turns into rocky lumps”. Many scholars have interpreted this as a reference to the temple of Sulis Minerva at Bath arguing that a sacred fire (fuelled by coal) was kept burning for her here.