Step 1 of 9
Add: 2 × green 4 × 8 plate

Lay two green 4 × 8 plates side by side, making a square.
See the model
A stepped dark mountain surrounds a bright lava core. Lift the whole lava section out to reveal the crater, then put it back for another pretend eruption.

Match the shape, size and colour to the parts pictures. A stud is a round bump on top. Count rows and columns from one edge.
New pieces keep their full colour. Earlier pieces are lighter. Keep the front of the model facing you unless a step says to turn it.
Gather all the pieces first, then take each step at your own pace. Help your child press pieces together and lift removable parts gently.
This is a fixed mountain with a lift-out lava model. It has no launching mechanism.
Lift the lava by its red middle, with a hand below it after removal.
The lava and mountain are both included in the inventory.
Gather pieces
Colours show the pictured version. Brown represents Reddish Brown. Match shapes and quantities first; other colour choices have not been checked for this edition.









Total: 35 pieces
Build
New pieces are in colour. Earlier pieces are lighter.
Add: 2 × green 4 × 8 plate

Lay two green 4 × 8 plates side by side, making a square.
Add: 4 × brown 2 × 2 brick

Put a brown square at each corner of the green floor.
Add: 4 × brown 2 × 4 brick

Join the corners with a brown 2 × 4 brick along each edge. Keep the middle open.
Add: 2 × red 2 × 2 brick; 1 × yellow 2 × 2 round tower brick

Put a red square in the very middle of the green floor. Stack a yellow round tower and another red square on it.
Add: 6 × brown 2 × 2 sloping brick

Put three brown slopes down each side, high edges facing the middle. Start one row in from the back edge.
Add: 4 × brown 2 × 2 sloping brick

Add two brown slopes across the back and two across the front, with their high edges towards the middle.
Add: 6 × brown 2 × 2 sloping brick

Build a smaller ring above the first. Put three brown slopes down each side, one column further in, with high edges towards the crater.
Add: 2 × brown 2 × 2 sloping brick

Close the upper ring with a brown slope across each end. Their high edges face the crater.
Add: 1 × yellow 4 × 4 round plate; 2 × red 2 × 3 curved brick; 1 × orange 2 × 2 cone

Centre a yellow round plate on the lava column. Put two red curved bricks side by side on it, rounded ends forwards. Finish with an orange cone centred over their back two rows.
Ready to play

Geometry: LDraw Parts Library. Part sources · Model and inventory · Render record
Revision 70b7c7e4276bcb9d202294bc074ceb063e1cb634bb2a096c17dd579418c20b9f
These new revisions have digital checks. They do not carry a new physical-test claim.