Cylindrical mass of solidified lava filling the neck of an extinct volcano

Let's find possible answers to "Cylindrical mass of solidified lava filling the neck of an extinct volcano" crossword clue. First of all, we will look for a few extra hints for this entry: Cylindrical mass of solidified lava filling the neck of an extinct volcano. Finally, we will solve this crossword puzzle clue and get the correct word. We have 1 possible solution for this clue in our database.