The Brave and the Bold #31 is an issue of the series The Brave and the Bold (Volume 1) with a cover date of September, 1960.
Synopsis for Cave Carson Adventures Inside Earth: "The Secret Beneath the Earth"
A pair of mountain climbers spot an odd sight; a balloon rising out the mouth of an inactive volcano. Wind gusts blow it close enough for the climbers to see it has a note tied to it. It said that the writer had found something, but he was trapped and needs help. The men brought the note back with them to town square, where it brought the attention of Bulldozer Smith and Christie Madison, tunnel expert and geologist.
Appearing in Cave Carson Adventures Inside Earth: "The Secret Beneath the Earth"
Featured Characters:
- Cave Carson (First appearance)
Supporting Characters:
- Cave Carson's Team (First appearance)
Antagonists:
- Magnetic Monster (Single appearance)
Other Characters:
Locations:
- Underground
Items:
- None
Vehicles:
- Mighty Mole (First appearance)