Infinite Fractal Pyramid 1989

Increments of Three 1983

Tripartite Pyramid 1989

Infinite Fractal Pyramid 1989

Cliffwall Pyramid V 1983

Niner Arc 1989

Interspacial 1987

Triunfo Creek Series 1986

Stone Pyramid 1986

Transparent Columns 1986

Atmospheric Pyramid 1987

Cliffwall Pyramid III 1982

Terrahedron III Deserts 1987

Terrahedron V Atlantic 1987

Elemental Oppositions 1997