Comic Title: Brave and the Bold #40
Publisher: DC (National Periodical Publications, Inc.)
Address: 575 Lexington Avenue, New York, NY
Cover Date: Feb/Mar 1962
On Sale Date: December 21, 1961 Newsstand Date December 21, 1961
Source: House Ad, World's Finest Comics #123, Page 22

Copyright Date December 21, 1961
Source: Library of Congress, Periodicals 1961

Frequency: Bi-monthly
Cover Price: $0.12
Page Count: 32
Circulation: 245000
Editor: Jack Schiff

Title: "Three Caverns of Doom"
Pages: 25

Feature(s):
Cave Carson (of Earth-1)

Writer: Bob Haney
Artist: Joe Kubert

Feature Character(s)

• Cave Carson (last appearance in Brave and the Bold #33; next appearance in Brave and the Bold #41)

Supporting Character(s)

• Bulldozer Smith (last appearance in Brave and the Bold #33; next appearance in Brave and the Bold #41)
• Christie Madison (last appearance in Brave and the Bold #33; next appearance in Brave and the Bold #41)

Villain(s)

• Zenod (a collector of sorcery books; no further appearances)
• A giant lizard and various sorcery-created monsters (no further appearances)

Other Character(s)

• Kardok (a sorcerer; appears only in flashback; no further appearances)
• An unnamed bookdealer (no further appearances)

Comments:
Chap. 2: "The Creature from the Egg"
Chap. 3: "The Menace of the Rock Monsters"

Synopsis:
Cave and his team encounter Zenod, a collector who has discovered the existance of three magic crystals. The first crystal allows Zenod to travel underground. Zenod beats Cave to the second crystal which gains power from solar energy. The villain uses this crystal to delay Cave, while he pursues the third and final crystal.

At the location of the final crystal, Zenod uses all three crystals against Cave and his team. In doing so the first crystal is destroyed. Zenod attempts to use the Mighty Mole to return to the surface, but Cave has rigged his vehicle to blind Zenod. Cave is then able to overpower his opponent and destroy the final two crystals.