Related Clues:
- Geological units
- Many, many ages
- Mountains have grown over them
- Time thats long as fuck
- Life span of a star
- Huge spans
- What mountains rise over
- So long I can't conceive of it, let alone write a good clue for it!
- Mountains formed over them
- Many millenia
- Long periods of leisure on sabbatical
- A while, in hyperbole
- Cosmic periods
- Stars exist over them
- Unbearable waits