How many letters does the top answer for “the quality of abounding in rocks and stones” have?

The most common answer is rockiness (9 letters).

Crossword clue: the quality of abounding in rocks and stones

1 answer found in Letterora's clue database (Wikidata facts, Open Trivia DB, WordNet and Webster definitions — all licensed sources).

rockiness 9 letters wn-def

the quality of abounding in rocks and stones

abounding in rocks or stones 75% similar → bouldered, bouldery