Minecraft End Portal Triangulation Finder

Triangulate likely stronghold coordinates from two Eye of Ender observations, then check distance, bearing, crossing angle, and measurement-quality warnings before traveling.

Two Eye of Ender readings

In Java Edition, stand still, throw an Eye, center your crosshair on it, and record X, Z, and yaw from the F3 screen.

First throw

Yaw

Second throw

Yaw

Move sideways—not just forward—before the second throw. A larger crossing angle gives the two rays a clearer intersection.

Estimated stronghold X, Z

500, 500

Exact ray intersection

500, 500

From second throw

707.1 blocks at yaw -135°

Ray crossing angle

90°

Strong geometry

Observation spacing

1,000 blocks

What this result means

This is the intersection of two measured Eye directions, not a guarantee of the portal-room block. Eyes lead toward a stronghold, and small yaw errors grow over long distances. Throw again near the estimate and follow the Eye before digging.

How Eye triangulation works

One Eye throw gives a direction but not a distance. Two throws from different positions create two direction rays; their X/Z intersection estimates where the Eye paths converge.

For a useful second reading, move sideways relative to the first Eye path. Moving only along the same line produces nearly parallel measurements and magnifies tiny yaw errors.

Improve the estimate

Record yaw while the crosshair is centered on the flying Eye, keep decimal readings, and use a wide baseline. Near the estimate, throw another Eye and follow its actual movement before digging.

Formula variables

$θ$: Java Edition yaw in degrees
$p₁, p₂$: Throw positions on the X/Z plane

Java yaw direction

d=(-sin heta,cos heta)

Ray model

p(t)=p_0+td

Target

p_1+t d_1=p_2+u d_2

Examples

Crossing Eye paths

Input

Throw 1: 0, 0 at −45°; Throw 2: 0, 1000 at −135°

Show result

Result

Estimated intersection: X 500, Z 500

Frequently Asked Questions

Does this find the exact End portal room?

No. Eyes point toward a stronghold. The result estimates the ray intersection; explore the stronghold to find its portal room.

Why are nearly parallel throws inaccurate?

A tiny angle error moves a shallow intersection a very large distance. A sideways second position creates stronger geometry.

References

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