There are a total of 15 Criptograma Chests and 30 Criptograma Charts in Far Cry 6. Criptograma Chests get marked on the map as you get near it. To open a Criptograma Chest you will need to find 2 Criptograma Charts nearby, which act as keys to open the chest. On opening the chest you will find a Piece of Armor.
You will find blue markings pointing towards the charts. There is also a wind chime near the chest and charts. You can follow the noise of the wind chime to locate them. This article shows the location of Criptograma Chest & Criptograma Charts in Concepción in the Conuco region in El Este.
Concepción Criptograma Chest and Criptograma Charts #05 & #24
The Criptograma Chest is on top of a roof in Concepción in the Conuco region in El Este as shown below.
Criptograma Chart #05: From the chest location, jump on the roof on the north side. Then jump down into the courtyard. The chart is inside the room in front of the staircase as shown below.
Criptograma Chart #24: This chart is on the top of the roof at the northeastern edge of Concepción. From the previous chart, climb up the staircase to reach the roof. Then use the zipline to reach the building on the east side. The chart is on the roof of the building on the north side as shown below.