Earthquakes can cause catastrophic failures and damage to the environment. Almost every year, more than 60% of disasters are recorded due to earthquakes, which occur at a rate of about two per minute. Besides this, the low amplitude ground waves of seismic vibrations due to substantial human activities (like trains and heavy machinery such as Pile driver) also affect the ideal working of highly sensitive machinery in industries as well as research laboratories. Most current shielding mechanisms against seismic disturbances fail in protecting structures from low-frequency vibrations, typically in the range of 1-10 Hz. We propose a novel locally resonant Zero-Frequency Stop Band (ZFSB) metamaterial in the form of cylindrical and cross with extended bars resonators clamped to a 0.5 m thick concrete bed. This concept is convenient for practical implementation and yields effective broadband wave inhibition in the ultra-low frequency range of 0-33 Hz. The novel seismic metamaterial concept is shown to achieve a bandgap due to the local resonance occurring between surface waves and the metamaterial features. Dynamic response- and transient time- analyses are used to gain insight into phononic dispersion in the proposed metamaterial. The effect of the material properties of the clamping bed on the performance of the proposed seismic metamaterial is also studied. The numerical results were validated through 1:40 scaled-down laboratory experiments. The concept proposed is widely scalable for practical implementations and thus of much interest for isolation and protection of civil structures from low-frequency seismic disturbances.