Doctor Who - The Greatest Doctor Who Story?

My favourite is a a 19 73 story called planet of the darle, in which johm perwe and goes to a planet of darles. It's a bit of a surprise half way through. And an on he defeats this army of darls by an unleashing a volcano that buries them. But because the writer wanted to make it more space and exciting, came up with the most silly idea he could think of. Rather than lava, hot lava, it's a volcano of ice, an ice cano as he called it. 16 years after that epso was shownan it was just a bit of sort of fansy fun. Really, a voyager