| |||
| most underexplored (area, site, basin etc.; The UK Rockall Basin is one of the most underexplored areas of the UK Continental Shelf (UKCS), with only 12 exploration wells drilled since 1980. Logofreak) | |||
| the least understood | |||
| |||
| most underexplored (area, site, basin etc.; The UK Rockall Basin is one of the most underexplored areas of the UK Continental Shelf (UKCS), with only 12 exploration wells drilled since 1980. Logofreak) | |||
| the least understood | |||
