Conversation so far:
What were the wilderness years?
CANNOTANSWER.
Did the band release any albums during this time?
The result was that the band's output dropped sharply, producing only three albums over the space of ten years.
what caused the bands output to drop so sharply?
Prior and Kemp devoted much energy to their own band (The Maddy Prior Band; see Maddy Prior (solo albums)), recording 4 albums, and also had children together.

Question: what was the name of an album produced during this time?
Self-contained rewrite: what was the name of an album produced by Steeleye Span during the wilderness years?