Possible Clues:

• Land with art, firearm at the ready
• ___ alba (gypsum)
• Lead-in to "cotta" or "firma"
• It may be incognita
• Veggie chip brand
• Partner of firma or cotta
• ___ firma (solid ground)
• Cotta or incognita lead-in
• It's between Venere and Marte
• Dry land