cliffs (Hebrew #6178)

30:6   To dwell
shakan (Hebrew #7931)
to reside or permanently stay (literally or figuratively)
KJV usage: abide, continue, (cause to, make to) dwell(-er), have habitation, inhabit, lay, place, (cause to) remain, rest, set (up).
Pronounce: shaw-kan'
Origin: a primitive root (apparently akin (by transmission) to 7901 through the idea of lodging; compare 5531, 7925)
in the clifts
`aruwts (Hebrew #6178)
feared, i.e. (concretely) a horrible place or chasm
KJV usage: cliffs.
Pronounce: aw-roots'
Origin: passive participle of 6206
of the valleys
nachal (Hebrew #5158)
or nachalah (Ezekiel 47:19; 48:28) {nakh-al-aw'}; from 5157 in its original sense; a stream, especially a winter torrent; (by implication) a (narrow) valley (in which a brook runs); also a shaft (of a mine)
KJV usage: brook, flood, river, stream, valley.
Pronounce: nakh'-al
Origin: or (feminine) nachlah (Psalm 124:4) {nakh'-law}
, in caves
chowr (Hebrew #2356)
the same as 2352; a cavity, socket, den
KJV usage: cave, hole.
Pronounce: khore
Origin: or (shortened) chor {khore}
of the earth
`aphar (Hebrew #6083)
dust (as powdered or gray); hence, clay, earth, mud
KJV usage: ashes, dust, earth, ground, morter, powder, rubbish.
Pronounce: aw-fawr'
Origin: from 6080
, and in the rocks
keph (Hebrew #3710)
a hollow rock
KJV usage: rock.
Pronounce: kafe
Origin: from 3721