A rock bursts into flames of lichen. These licking flames scorch the granite
surface in a slow burn that simmers over years of constant combustion.
Strangely, it is drought that extinguishes such a vibrant blaze.
Water only heightens their intensity.
You can hold your hands to such a fire and feel its energy.
m1nute 
I “lichen” this.And the granite looks so much nicer than on a kitchen countertop.
You should consider a ‘pun’ blog, Alice. You’ve got a great sense of humour!