Preheat oven to 375
Using a paring knife, cut 12 small pockets, spread out in the lamb leg.
Insert one clove of garlic into each pocket.
Rub the leg with the olive oil, the rub the herbs, salt and pepper over the leg.
Place the lamb in a large roasting pan, and place it in the preheated oven.
Roast for 30 minutes, then reduce the heat to 325 and continue to bake for 1 hour and 15 minutes to achieve a medium rare temperature. If using a thermometer, it should register 145 degrees.
Remove from the oven and allow the lamb to rest for 10 minutes. Slice thinly around the bone and serve.