Photo Links in Adventure Section (Travel Agency Theme)

On my home page (https://ewtravel.com) I use the Adventure Section to highlight the different types of tours we do (East African, Northern Africa, etc.). Currently, the tiny green arrow on each photo is a link. Can I make the entire photo a link, so visitors can click anywhere on the photo and not just the tiny green arrow?

Thank you for your help!

The page I need help with: [log in to see the link]