diff --git a/zfs_replication_exporter.go b/zfs_replication_exporter.go
index dc6bccc..857b54c 100644
--- a/zfs_replication_exporter.go
+++ b/zfs_replication_exporter.go
@@ -43,6 +43,12 @@ var (
 	},
 		[]string{"host", "filesystem"},
 	)
+	snapshotTimestampMetric = prometheus.NewGaugeVec(prometheus.GaugeOpts{
+		Name: "zfs_snapshot_timestamp_seconds",
+		Help: "Most recent snapshot timestamp for `filesystem` UNIX epoch seconds",
+	},
+		[]string{"host", "filesystem"},
+	)
 	snapshotCountsMetrics = prometheus.NewGaugeVec(prometheus.GaugeOpts{
 		Name: "zfs_snapshot_count",
 		Help: "Count of snapshots per-filesystem",
@@ -54,6 +60,7 @@ var (
 func init() {
 	prometheus.MustRegister(fetchRequestDurationMetric)
 	prometheus.MustRegister(snapshotAgesMetric)
+	prometheus.MustRegister(snapshotTimestampMetric)
 	prometheus.MustRegister(snapshotCountsMetrics)
 }
 
@@ -149,6 +156,7 @@ func updateMetrics(host string, c *ssh.Client) error {
 	}
 	for filesystem, snapshotTime := range snapshotAges {
 		snapshotAgesMetric.WithLabelValues(host, filesystem).Set(now.Sub(snapshotTime).Seconds())
+		snapshotTimestampMetric.WithLabelValues(host, filesystem).Set(float64(snapshotTime.Unix()))
 	}
 	return nil
 }