Puzzle 4

Dian __, US zoologist studied mountain gorillas

Rounded at the top like a doorway

Treasure covered with earth, hidden underground

Informal name for Champagne or other fizz

Highly attractive, enticing quality

Deep gorge in cliffs

Weekly or monthly payment from an employer

Marvel or DC publications

Recollection of a past experience

A vote, with options to choose between

A track, for mountain biking or skiing

Chastise, discipline

Adrenaline __; one who enjoys dangerous activities

To add someone on a social network

Glacial period in time