diff --git a/mapper/src/App.js b/mapper/src/App.js
index d1c32c8..251a364 100644
--- a/mapper/src/App.js
+++ b/mapper/src/App.js
@@ -510,6 +510,63 @@ function Menu({data, duration, setDuration, end, setEnd, slider, setSlider, subm
 		setSubmenu(false);
 	};
 
+	const includeArea = () => {
+		const drawnRectangles = drawnItems.map(item => item.bounds);
+		if (!drawnRectangles.length || !data || !Array.isArray(data)) {
+			if (!drawnRectangles.length) alert("Please draw one or more rectangles on the map first.");
+			setSubmenu(false);
+			return;
+		}
+
+		const isInsideInclusionZone = (lat, lon) => {
+			for (const rect of drawnRectangles) {
+				if (rect.contains([lat, lon])) {
+					return true;
+				}
+			}
+			return false;
+		};
+
+		let minTime = null;
+		let maxTime = null;
+
+		for (const point of data) {
+			if (!point || typeof point.lat !== 'number' || typeof point.lon !== 'number' || !point.time) {
+				continue;
+			}
+
+			const isInside = isInsideInclusionZone(point.lat, point.lon);
+
+			if (isInside) {
+				if (minTime === null || point.time < minTime) {
+					minTime = point.time;
+				}
+				if (maxTime === null || point.time > maxTime) {
+					maxTime = point.time;
+				}
+			}
+		}
+
+		if (minTime === null) {
+			alert("No data points found inside the selected area(s).");
+			setSubmenu(false);
+			return;
+		}
+
+		const startUnix = moment(minTime).unix();
+		const endUnix = moment(maxTime).unix();
+		const endOfWindowUnix = end.unix();
+
+		const newSliderStart = Math.floor((startUnix - endOfWindowUnix) / duration.secs + duration.num);
+		const newSliderEnd = Math.ceil((endUnix - endOfWindowUnix) / duration.secs + duration.num);
+
+		const clampedStart = Math.max(0, newSliderStart);
+		const clampedEnd = Math.min(duration.num, newSliderEnd);
+
+		setSlider([clampedStart, clampedEnd]);
+		setSubmenu(false);
+	};
+
 	const searchArea = async () => {
 		const drawnRectangles = drawnItems.map(item => item.bounds);
 		if (!drawnRectangles.length) {
@@ -837,6 +894,7 @@ function Menu({data, duration, setDuration, end, setEnd, slider, setSlider, subm
 									</label>
 									<button onClick={recentreView}>Recentre view</button>
 									<button onClick={excludeArea}>Exclude area</button>
+									<button onClick={includeArea}>Include area</button>
 									<button onClick={searchArea} disabled={isSearching}>
 										{isSearching ? 'Searching...' : 'Search area'}
 									</button>