diff --git a/package.json b/package.json
index e5439ff8..fbbfcbde 100644
--- a/package.json
+++ b/package.json
@@ -27,7 +27,7 @@
     "@babel/runtime": "^7.17.2",
     "@google-cloud/storage": "^6.9.5",
     "@graphql-tools/schema": "^8.3.1",
-    "@openbeta/sandbag": "^0.0.48",
+    "@openbeta/sandbag": "^0.0.51",
     "@turf/area": "^6.5.0",
     "@turf/bbox": "^6.5.0",
     "@turf/bbox-polygon": "^6.5.0",
diff --git a/src/GradeUtils.ts b/src/GradeUtils.ts
index d869fdfa..42dab36c 100644
--- a/src/GradeUtils.ts
+++ b/src/GradeUtils.ts
@@ -15,6 +15,7 @@ export enum GradeContexts {
   ALSK = 'ALSK',
   /** Australia */
   AU = 'AU',
+  /** Brazil */
   BRZ = 'BRZ',
   FIN = 'FIN',
   FR = 'FR',
@@ -96,6 +97,22 @@ export const gradeContextToGradeScales: Partial<Record<GradeContexts, ClimbGrade
     aid: GradeScales.UIAA,
     snow: GradeScales.UIAA, // TODO: remove `snow` since it duplicates `ice`
     ice: GradeScales.WI
+  },
+  [GradeContexts.BRZ]: {
+    trad: GradeScales.BRAZILIAN_CRUX,
+    sport: GradeScales.BRAZILIAN_CRUX,
+    bouldering: GradeScales.VSCALE,
+    tr: GradeScales.BRAZILIAN_CRUX,
+    deepwatersolo: GradeScales.BRAZILIAN_CRUX,
+    alpine: GradeScales.BRAZILIAN_CRUX,
+    mixed: GradeScales.BRAZILIAN_CRUX,
+    aid: GradeScales.AID,
+    // definitely no ice in brazil, however once this guy
+    // top roped a fragile frozen waterfall with ice picks
+    // and crampons:
+    ice: GradeScales.WI,
+    // whenever it snows in brazil, you see it in the news
+    snow: GradeScales.WI
   }
 }
 
diff --git a/src/__tests__/gradeUtils.ts b/src/__tests__/gradeUtils.ts
index be4eeb59..94c8fffe 100644
--- a/src/__tests__/gradeUtils.ts
+++ b/src/__tests__/gradeUtils.ts
@@ -175,4 +175,36 @@ describe('Test grade utilities', () => {
     actual = createGradeObject('5.9', sanitizeDisciplines({ bouldering: true }), context)
     expect(actual).toBeUndefined()
   })
+
+  it('creates grade object correctly in BRZ context', () => {
+    const context = gradeContextToGradeScales.BRZ
+    if (context == null) { fail('Bad grade context.  Should not happen.') }
+    let actual = createGradeObject('V', sanitizeDisciplines({ sport: true }), context)
+    expect(actual).toEqual({
+      brazilian_crux: 'V'
+    })
+    actual = createGradeObject('A2', sanitizeDisciplines({ aid: true }), context)
+    expect(actual).toEqual({
+      aid: 'A2'
+    })
+    actual = createGradeObject('C1', sanitizeDisciplines({ aid: true }), context)
+    expect(actual).toEqual({
+      aid: 'C1'
+    })
+    actual = createGradeObject('V5', sanitizeDisciplines({ bouldering: true }), context)
+    expect(actual).toEqual({
+      vscale: 'V5'
+    })
+    actual = createGradeObject('WI6', sanitizeDisciplines({ ice: true }), context)
+    expect(actual).toEqual({
+      wi: 'WI6'
+    })
+    actual = createGradeObject('VIIb', sanitizeDisciplines({ deepwatersolo: true }), context)
+    expect(actual).toEqual({
+      brazilian_crux: 'VIIb'
+    })
+    // Invalid input
+    actual = createGradeObject('5.9', sanitizeDisciplines({ bouldering: true }), context)
+    expect(actual).toBeUndefined()
+  })
 })
diff --git a/src/model/__tests__/MutableClimbDataSource.ts b/src/model/__tests__/MutableClimbDataSource.ts
index c3665fa1..e343d73e 100644
--- a/src/model/__tests__/MutableClimbDataSource.ts
+++ b/src/model/__tests__/MutableClimbDataSource.ts
@@ -380,6 +380,81 @@ describe('Climb CRUD', () => {
     }
   })
 
+  it('handles Brazilian grade context correctly', async () => {
+    await areas.addCountry('bra')
+
+    {
+      // A roped climbing area
+      const newClimbingArea = await areas.addArea(testUser, 'Climbing area in Brazil', null, 'bra')
+      if (newClimbingArea == null) fail('Expect new area to be created in Brazil')
+
+      const newclimbs = [
+        { ...newSportClimb1, grade: 'VIsup' }, // good sport grade
+        { ...newSportClimb2, grade: 'VIsup/VIIa', disciplines: { trad: true } }, // good trad and slash grade
+        { ...newSportClimb2, grade: '5.9' }, // bad BRZ context grade
+        { ...newIceRoute, grade: 'WI4+' }, // good WI BRZ context grade
+        { ...newAidRoute, grade: 'A0' } // good aid grade
+      ]
+
+      const newIDs = await climbs.addOrUpdateClimbs(
+        testUser,
+        newClimbingArea.metadata.area_id,
+        newclimbs
+      )
+      expect(newIDs).toHaveLength(newclimbs.length)
+
+      const climb1 = await climbs.findOneClimbByMUUID(muid.from(newIDs[0]))
+      expect(climb1?.grades).toEqual({ brazilian_crux: 'VIsup' })
+      expect(climb1?.type.sport).toBe(true)
+      expect(newSportClimb1?.boltsCount).toEqual(2)
+
+      const climb2 = await climbs.findOneClimbByMUUID(muid.from(newIDs[1]))
+      expect(climb2?.grades).toEqual({ brazilian_crux: 'VIsup/VIIa' })
+      expect(climb2?.type.sport).toBe(false)
+      expect(climb2?.type.trad).toBe(true)
+
+      const climb3 = await climbs.findOneClimbByMUUID(muid.from(newIDs[2]))
+      expect(climb3?.grades).toEqual(undefined)
+
+      const climb4 = await climbs.findOneClimbByMUUID(muid.from(newIDs[3]))
+      expect(climb4?.grades).toEqual({ wi: 'WI4+' })
+      expect(climb4?.type.sport).toBe(false)
+      expect(climb4?.type.trad).toBe(false)
+      expect(climb4?.type.bouldering).toBe(false)
+      expect(climb4?.type.ice).toBe(true)
+
+      const climb5 = await climbs.findOneClimbByMUUID(muid.from(newIDs[4]))
+      expect(climb5?.grades).toEqual({ aid: 'A0' })
+      expect(climb5?.type.sport).toBe(false)
+      expect(climb5?.type.trad).toBe(false)
+      expect(climb5?.type.aid).toBe(true)
+    }
+
+    {
+      // A bouldering area
+      const newBoulderingArea = await areas.addArea(testUser, 'Bouldering area 1', null, 'bra')
+      if (newBoulderingArea == null) fail('Expect new area to be created')
+
+      const newIDs = await climbs.addOrUpdateClimbs(
+        testUser,
+        newBoulderingArea.metadata.area_id,
+        [{ ...newBoulderProblem1, grade: 'V3' }, // good grade
+          { ...newBoulderProblem2, grade: '23' }, // bad boulder grade
+          { ...newBoulderProblem2, grade: '7B' }]) // invalid grade (font grade for a AU context boulder problem)
+
+      expect(newIDs).toHaveLength(3)
+
+      const climb1 = await climbs.findOneClimbByMUUID(muid.from(newIDs[0]))
+      expect(climb1?.grades).toEqual({ vscale: 'V3' })
+
+      const climb2 = await climbs.findOneClimbByMUUID(muid.from(newIDs[1]))
+      expect(climb2?.grades).toEqual(undefined)
+
+      const climb3 = await climbs.findOneClimbByMUUID(muid.from(newIDs[2]))
+      expect(climb3?.grades).toEqual(undefined)
+    }
+  })
+
   it('handles UIAA grades correctly', async () => {
     await areas.addCountry('deu') // Assuming Germany since UIAA is dominant grading system
 
diff --git a/yarn.lock b/yarn.lock
index 2f5485d8..ad2ed3d8 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1579,10 +1579,10 @@
     "@nodelib/fs.scandir" "2.1.5"
     fastq "^1.6.0"
 
-"@openbeta/sandbag@^0.0.48":
-  version "0.0.48"
-  resolved "https://registry.yarnpkg.com/@openbeta/sandbag/-/sandbag-0.0.48.tgz#d876ae47634c287be1f71858576a9f826f8ee270"
-  integrity sha512-QyTGG9Y+c+2TY+EbdUByAAr1u7qyqZ4H1ZM0TztetJU/a7TLjdMoR32yaRY8uSFvm3f1sP0zn0ffhlLiICDdlg==
+"@openbeta/sandbag@^0.0.51":
+  version "0.0.51"
+  resolved "https://registry.yarnpkg.com/@openbeta/sandbag/-/sandbag-0.0.51.tgz#21ce618d2414dc0b8d4f31ef260ac2ebad5a43c8"
+  integrity sha512-qMVohgqRdFjXH8a3aSEZa6zemwSpak/HMttR/pqvclDIXqgPKzWvjFRA3o/YDGieI/19P4dtizLo91TKx0smGQ==
 
 "@panva/asn1.js@^1.0.0":
   version "1.0.0"