f=14mm from BN SW rim. What a change! In 1997 BN was one single, huge pit. Now it is filled almost to the rim and only two big vents remain as major depressions within the crater (JA). |
f=14mm from BN SW rim. What a change! In 1997 BN was one single, huge pit. Now it is filled almost to the rim and only two big vents remain as major depressions within the crater (JA). |