There are no known canon examples of vaHbo'. KGT 10f.: For example, qajunpaQ (courage, audacity) comes from *kajunpakt*, a word used in this sense but literally meaning something like "glowing lava" or "fiery lava" in a language originally spoken on Krios. In Klingon, it implies courage of a rather surprising or unexpected kind, perhaps even recklessness, as opposed to toDuj (courage, bravery), which is more neutral. Some Klingon speakers preserve the original pronunciation, though most fall into the more usual Klingon phonetic pattern. Probably very few Klingons are even vaguely aware of the original connection of *kajunpakt* with lava, glowing or otherwise. The Klingon word for lava, vaHbo', has nothing to do with *kajunpakt*. In the paq'batlh, the lava-filled area inside the volcano is referred to as qul ngeng ("fire lake"), and its border ("shore" in the English text) qul ngeng HeH (or simply ngeng HeH). Kri'stak's top is referred to as its yor. qul bIQtIqHom "fire stream" also shows up. Cultural notes: KGT 59: According to Klingon tradition, the first bat'leth was forged by Kahless the Unforgettable, the founder of the Klingon Empire, from a lock of his hair dipped in molten lava." I.e. at the Kri'stak QIStaq volcano. The Rite of *MajQa* is a ritual involving deep meditation in the lava caves of the planet No'Mat. Prolonged exposure to the heat is believed to induce a hallucinatory effect." (STE; TNG "Birthright I") The monastery on Boreth is also located above lava caves. (TNG "Rightful Heir") AFAIK we still have no word or expression for "volcano" although *qul HuD, *vaHbo' HuD and *vaHbo'Hal have all been used on the List.