la

• Article

  the (definite article)

• Pron
• Noun

cavité

cavity

dans

• Prep

  1. in, inside (enclosed in a physical space, a group, a state)
  2. to (indicates direction towards certain large subdivisions, see usage notes)
  3. in, within (a longer period of time)
  4. during
  5. out of, from
  6. in; in the works of
  7. (colloquial) Used in dans les (“about, around”)

• Noun

les

• Article

  1. plural of le: the
  2. plural of la: the

• Pron

calcaires

plural of calcaire

dévoniens

masculine plural of dévonien