In a skillet, over medium heat, cook ground beef until browned.
Drain the grease and add taco seasoning, following package instructions.
In a large salad bowl, combine chopped lettuce, cherry tomatoes, cheddar cheese, black olives, red onion and cucumber.
Add the cooked beef to the salad bowl.
Top the salad with crushed Doritos, dollops of sour cream and salsa.
Toss everything gently to combine before serving.