Surface models

Even (1:100 people on it) Tilt (1:100 people on it) Wave (1:100 people on it) Alternative wave (1:50 person on it)
Block (1:100 people on it)
Pebbles (1:100 people on it)
Alernative even (1:50 person on it)
Recycled wasteland (1:50 person on it)
See comments/evaluation for each proposal in the diagram in the post below.