This is a cycle of electro-acoustic works that uses artificial excitation-pulses and physical resonators, as its basic materials. The pulses can be adapted to fit new acoustic resonators, but also spacious buildings and areas with sufficient reverberation.

The name comes from the suggestion that the physical form of the resonant instrument gives, as they were used in this first part of the cycle, namely long bamboo-flutes that look like stalagmites in caves. Also the original source material that activates these flutes look like spikes.

The BassBox is an electric airpump that blows exact streams of wind into bamboo-flutes and through this, interesting rhythmic patterns occur. These low frequencies come from powerfull bass loudspeakers, thus functioning as virtual fundamentals for the flutes. The input to the BassBox can be either created by the specially built Pulsor analog trigger synthesizer, or by low frequency soundfiles. For this particular composition different flutes on the BassBoxes, through extreme close-miking, were recorded for the capturing of the varying spectra and timbres.