diff --git a/local-run.js b/local-run.js
index 1083c95..f8af24f 100644
--- a/local-run.js
+++ b/local-run.js
@@ -14,25 +14,27 @@ const doProcess = async () => {
     await handler({
         // crealmIds: [100, 104, 106, 1070, 1071, 1072, 11, 1129, 113, 1136, 1138, 114, 1147, 115, 1151, 1168],
         // dungeonIds: [391,392,370,369],
-        crealmIds: [
-            3694, 1168,  151,    4,    5, 3661,  127,    9,  121,   11,
-              12, 1190,  104,  155, 3693,   47,   52,   53,   54,   55,
-            1129,   57,   58, 3684,   60,   61,   63,   64, 3683,   67,
-            1175,   69,   77,   71,  157,   73,   96,   75,   76,   78,
-             154, 1136,   84,   86,  113,  125, 1138,   99,  100,  106,
-            1185,  114,  115,  117,  118,  120,  158,  160,  162,  163,
-            1070, 1071, 1072, 1147, 1151, 1184, 3678, 3685, 1426, 3675,
-            1171, 1425, 1427, 1428, 3676, 3207, 3208, 3209, 3234, 3721,
-            3726, 3723, 3725
-          ],
-        dungeonIds: [
+        // crealmIds: [
+        //     3694, 1168,  151,    4,    5, 3661,  127,    9,  121,   11,
+        //       12, 1190,  104,  155, 3693,   47,   52,   53,   54,   55,
+        //     1129,   57,   58, 3684,   60,   61,   63,   64, 3683,   67,
+        //     1175,   69,   77,   71,  157,   73,   96,   75,   76,   78,
+        //      154, 1136,   84,   86,  113,  125, 1138,   99,  100,  106,
+        //     1185,  114,  115,  117,  118,  120,  158,  160,  162,  163,
+        //     1070, 1071, 1072, 1147, 1151, 1184, 3678, 3685, 1426, 3675,
+        //     1171, 1425, 1427, 1428, 3676, 3207, 3208, 3209, 3234, 3721,
+        //     3726, 3723, 3725
+        //   ],
+        // dungeonIds: [ 227
             //166, 169, 227,
             //234, 369, 370,
-            391, 392
-          ],
-        period: 874,
-        afterEpoch: 0,//Date.now()-86360,
-        isAGlobalScan: true
+            // 391, 392
+            // 391
+          // ],
+        //   period: 999
+        // period: 875,
+        // afterEpoch: 0,//Date.now()-86360,
+        // isAGlobalScan: true
     });
 
     console.log('success.');
diff --git a/src/get-snapshot.js b/src/get-snapshot.js
index 4918de0..2433d29 100644
--- a/src/get-snapshot.js
+++ b/src/get-snapshot.js
@@ -1,11 +1,61 @@
 const {
     queueUntilResolved,
-    getMythicLeaderboard
+    getMythicLeaderboard,
+    getDb
 } = require('@dungeoneer-io/nodejs-utils');
 const { mapApiRunToRun } = require('./bapi-mapper/run-snapshot');
+const {
+    COLLECTIONS,
+    DATABASES
+} = require('./entity-enums');
+
+const getPeriodFixture = async (periodid) => {
+    const fixtureCollection = await getDb()
+        .db(DATABASES.DEFAULT)
+        .collection(COLLECTIONS.PERIODFIXTURES);
+
+    console.log(`retrieving snapshot ${ periodid }`);
+    let snapshot;
+
+    if (periodid) {
+        snapshot = await fixtureCollection.findOne({ _id: periodid });
+    }
+    if (!snapshot) {
+        console.log('undefined or unavailable fixture, using latest');
+        snapshot = await fixtureCollection.findOne({}, { sort: {$natural:-1}});
+    }
+
+    const periodFixture = {
+        dungeonIds: Object.keys(snapshot.dungeonMap),
+        crealmIds: [...new Set(Object.values(snapshot.rlmToCrlm))],
+        period: snapshot._id
+    };
+
+    return periodFixture;
+};
 
 const getSnapshot = async (lambdaEvent) => {
-    const { crealmIds, dungeonIds, period, afterEpoch = 0, isAGlobalScan = false } = lambdaEvent;
+    let {
+        crealmIds,
+        dungeonIds,
+        period,
+        afterEpoch = 0,
+        isAGlobalScan = false
+    } = lambdaEvent;
+
+    if (!crealmIds || !dungeonIds || !period) {
+        const periodFixture = await getPeriodFixture(period);
+
+        if (!crealmIds) {
+            crealmIds = periodFixture.crealmIds;
+        }
+
+        if (!dungeonIds) {
+            dungeonIds = [periodFixture.dungeonIds[0]];
+        }
+
+        period = periodFixture.period;
+    }
 
     const fetchLeaderboardAndTransformResult = async ({
         afterEpoch,