Go to the indicated locations at Isla Striate to find the corresponding tomb. They appear as mounds with blue flowers. Find the door and pay your respects. You can find an Urga Stupka-201 behind each tomb. A hand held mortar is rewarded for finding all of them.
#1: Litore Torto at N40 50.48, E5 45.10.
#2: Grande Pastura at N40 51.54, E5 44.60.
#3: Grande Pastura at N40 50.67, E5 41.79.
#4: Grande Pastura at N40 49.94, E5 41.84.
#5: Grande Pastura at N40 49.65, E5 42.93.
#6: Val De Mar at N40 47.10, E5 41.19.
#7: Val De Mar at N40 46.79, E5 40.78.
#8: Maestrale at N40 47.20, E5 39.02.
#9: Maestrale at N40 47.14, E5 38.06.
#10: Maestrale at N40 47.18, E5 36.89.
#11: Maestrale at N40 47.71, E5 35.08.
#12: Maestrale at N40 48.52, E5 36.04.
#13: Maestrale at N40 48.79, E5 35.44.
#14: Maestrale at N40 48.82, E5 34.57.
#15: Maestrale at N40 49.47, E5 34.26.
#16: Maestrale at N40 49.07, E5 33.08.
#17: Libeccio at N40 45.89, E5 32.75.
#18: Libeccio at N40 45.98, E5 33.68.
#19: Libeccio at N40 46.37, E5 36.94.
#20: Maestrale at N40 45.75, E5 38.74.
#21: Prospere at N40 44.605, E5 40.03.
#22: Litore Torto at N40 46.91, E5 45.68.
#23: Costa Sud at N40 46.46, E5 46.69.